📍 2710 S Rochester Rd, Suite 3, Rochester Hills, MI 48307  |  📞 248-853-9097  |  ✉ info@mddhillon.com
Dr. Gursharan Dhillon MD — Allergy Immunology Rochester Hills
Board-Certified · Rochester Hills, Michigan

Dr. Gursharan Dhillon MD brings over 23 years of compassionate, patient-centered care to Rochester Hills.

23+
Years Experience
4
Hospital Affiliations
4.6★
Patient Rating

Comprehensive Care,
Personal Attention

At Rochester Family Medical Center Allergy Immunology, every patient's voice is heard and every condition is approached with dignity and medical precision. Dr. Dhillon personally performs all allergy testing — no delegation, no shortcuts.

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Physician-Led Testing

All allergy testing — including skin prick tests, patch tests, and immunological evaluations — is performed directly by Dr. Dhillon, ensuring the highest accuracy and personalized care.

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Multi-Hospital Affiliated

Dr. Dhillon holds privileges at Beaumont Corewell, Ascension, Trinity Oakland and Henry Ford Rochester — following inpatients personally across all facilities.

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Same-Day Consultations

We understand that allergy symptoms and medical concerns don't wait. Our team strives to accommodate urgent appointments and same-day consultations whenever possible.

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Holistic, Evidence-Based

Our approach blends the latest evidence-based medicine with a deep understanding of each patient's unique lifestyle, environment, and medical history.

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Multilingual Care

Dr. Dhillon speaks English, Hindi, and Punjabi — providing patients from diverse backgrounds the comfort of speaking in their preferred language.

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Accepting New Patients

We accept most major insurance plans including Blue Cross Blue Shield, Cigna, UnitedHealthcare, Humana, Aetna, and many more. Telehealth options available.

Our Approach

Doctor Consultation & Medical Care

Every visit begins with Dr. Dhillon listening carefully to your full history. No rushing — we spend real time understanding your unique medical picture before any testing begins. Our goal is accurate diagnosis, compassionate care, and lasting results.

🚨 URGENT CARE — Same Day Available
⚖️
Medical Weight Loss
Physician-supervised programs with metabolic assessment, nutritional guidance, and GLP-1 therapy options (semaglutide/tirzepatide).
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Peptide & IV Therapy
IV nutrient infusions and peptide treatments for energy, immunity, and recovery — administered under direct physician supervision.
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Urgent Care — Same Day
Open for same-day urgent needs: acute illness, allergic reactions, infections & more. Call 248-853-9097 now.

Allergy & Immunology Meets Internal Medicine

Our dual-specialty practice is uniquely positioned to diagnose and treat the full spectrum of allergic, immunological, and internal medicine conditions. From anaphylaxis and asthma to hypertension and thyroid disorders — we are your comprehensive medical home.

  • Food, environmental, and drug allergies
  • Asthma and respiratory conditions
  • Immunotherapy (allergy shots)
  • Eosinophilic Esophagitis (EOE) — dupilumab approved
  • Skin allergy testing and patch testing
  • Primary care & internal medicine for adults & children

Trusted by Families Across Rochester Hills

"
★★★★★

Dr. Dhillon is a wonderful doctor. He is kind, caring and knows his medicine. He also follows up with his patients. One of the most important aspects of his practice is that he cares for his own patients if they are hospitalized. I couldn't ask for a better doctor.

— Verified Patient
Vitals.com · 5 Stars
"
★★★★★

Dr. Dhillon took his time and was very patient with us. This was our first appointment and we will definitely return. He listened to all our concerns without rushing and explained everything clearly.

— Verified Patient
Healthgrades · 5 Stars
"
★★★★★

Highly recommended by US News doctors. Dr. Dhillon is highly recommended by patients and has been serving the Rochester Hills community for over two decades with expertise and compassion.

— Verified Patient
US News Doctors · Highly Recommended

Dedicated to Your Health
for Over 23 Years

A beacon of hope for patients grappling with debilitating allergic and medical conditions — Dr. Dhillon treats every patient with compassion, dignity, and expert care.

Dr. Gursharan Dhillon MD
23+ Years in Practice

Dr. Gursharan Dhillon, MD

Allergy & Immunology · Internal Medicine · Pediatrics

Dr. Dhillon is an Internal Medicine and Pediatrics trained physician from the St. Joseph Mercy / Henry Ford program. After completing his residency in December 2001, he has served the Rochester Hills community with distinction. In 2005, he expanded his expertise by completing a fellowship in Allergy/Immunology at Children's Hospital of Michigan / Henry Ford Health, adding a vital specialty to his practice.

Dr. Dhillon's primary goal is to treat every patient with compassion. He personally follows all inpatients, maintaining direct doctor-to-patient contact at all times — a distinction rare in modern medicine. He speaks English, Hindi, and Punjabi, and is committed to serving patients from all backgrounds.

  • Medical Degree: Guru Govind Singh Medical College Hospital, 1995
  • Residency: Internal Medicine/Pediatrics — St. Joseph Mercy/Henry Ford, 1998–2001
  • Fellowship: Allergy & Immunology — Henry Ford Health / Children's Hospital of Michigan, 2003–2005
  • Board Certification: Allergy & Immunology — American Board of Allergy and Immunology, 2006
  • Rating: 4.6 Stars based on 21+ patient ratings (Vitals.com)
  • Languages: English, Hindi, Punjabi
Beaumont Corewell Ascension Providence Rochester Trinity Health Oakland Henry Ford Rochester
Medical office

Rochester Family Medical Center Allergy Immunology

Our practice at 2710 S. Rochester Road, Suite 3 in Rochester Hills serves as a comprehensive medical home for patients across the greater Detroit metropolitan area. With unwavering dedication, our Allergy and Medical Practice stands as a beacon of hope for those grappling with debilitating conditions.

"With our compassionate and honest approach, we delve into the intricacies of each patient's unique medical condition. Our patients' voices are heard and we treat each person with dignity."

Dr. Dhillon is currently accepting new patients and offers both in-person and telehealth appointment options for your convenience.

Medical care
Dual Specialty

Comprehensive Medical Care

Board-certified in both Allergy & Immunology and Internal Medicine, Dr. Dhillon provides a level of breadth that most specialists cannot. Whether your concern is a complex food allergy or chronic hypertension, you'll receive expert, coordinated care under one roof.

Allergy injection
Long-Term Relief

Allergy Immunotherapy

Allergy shots are the only treatment that addresses the root cause of allergies — not just the symptoms. Dr. Dhillon has been administering and monitoring immunotherapy programs for over 20 years, with proven results for environmental, insect, and seasonal allergens.

Medical team
Community

Serving Rochester Hills Since 2001

Since completing his residency in 2001, Dr. Dhillon has built lasting relationships with families across Rochester Hills, Troy, Auburn Hills, and beyond. Generations of patients trust our practice as their medical home — a testament to the consistency and quality of care we provide.

Comprehensive Medical Services

From allergy skin testing to immunotherapy and internal medicine — all services performed and overseen by Dr. Dhillon himself.

1

Consultation

Thorough review of medical history, symptoms, and concerns

2

Testing

Physician-performed skin prick, patch, or blood allergy tests

3

Diagnosis

Accurate diagnosis based on test results and clinical evaluation

4

Treatment

Personalized treatment plan including immunotherapy, medications, and lifestyle guidance

What We Treat & Offer

01

Asthma Management

Comprehensive asthma evaluation, pulmonary function testing, inhaler technique training, and personalized asthma action plans.

02

Insect Sting Allergy

Evaluation and venom immunotherapy for bee, wasp, yellow jacket, and hornet allergies. Epinephrine auto-injector prescribing and training.

03

Internal Medicine

Primary care for adults: hypertension, diabetes, thyroid disorders, anemia, preventive care, annual physicals, and chronic disease management.

04

Pediatric Care

Allergy and general pediatric services for children, including evaluation for childhood asthma, food allergies, and recurrent infections.

05

Patch Testing

Comprehensive contact allergen patch testing for patients with suspected contact dermatitis, eczema, or occupational skin conditions.

06

Telehealth Services

Virtual consultations available for follow-up visits, prescription management, result reviews, and new patient screenings from the comfort of your home.

07

Hypertension Management

Comprehensive blood pressure evaluation, lifestyle counseling, and medication management for high blood pressure. Regular monitoring with personalized treatment goals to reduce cardiovascular risk.

08

Diabetes Care & Prevention

Type 1 and Type 2 diabetes management including HbA1c monitoring, blood glucose optimization, insulin management, and prevention counseling for pre-diabetic patients.

09

Thyroid Disorders

Evaluation and management of hypothyroidism, hyperthyroidism, and thyroid nodules. TSH, T3, T4 testing with evidence-based medication management including levothyroxine therapy.

10

Cholesterol & Lipid Management

Complete lipid panel analysis, cardiovascular risk assessment, and statin or non-statin therapy management. Dietary counseling and monitoring for optimal heart health outcomes.

11

Annual Physical Exams

Comprehensive annual wellness visits for adults including full physical examination, preventive screening labs, immunization review, and personalized health goal-setting.

12

Anemia & Blood Disorders

Diagnosis and management of iron deficiency anemia, B12/folate deficiency, and other hematologic conditions. CBC evaluation with targeted treatment planning.

13

Obesity & Medical Weight Loss

Physician-supervised weight management including metabolic evaluation, BMI-based risk assessment, and GLP-1 receptor agonist therapy (semaglutide / tirzepatide) for eligible patients.

14

Vitamin & Nutritional Deficiency Testing

Screening and management of Vitamin D, Vitamin B12, folate, iron, magnesium, and zinc deficiencies. Supplementation guidance and monitoring to restore optimal levels.

15

Chronic Disease Management

Ongoing management of chronic conditions including GERD, IBS, arthritis, osteoporosis, and kidney disease. Coordinated care with specialist referrals when indicated.

16

Peptide & IV Therapy

Physician-administered IV nutrient infusions and peptide therapies for energy, immune support, and recovery. All treatments performed under direct physician supervision.

17

EKG (Electrocardiogram)

In-office 12-lead EKG testing to evaluate heart rhythm, detect arrhythmias, screen for coronary artery disease, and monitor cardiac conditions. Results reviewed and interpreted by Dr. Dhillon during your visit.

18

Pulmonary Function Tests (PFT / Spirometry)

Comprehensive lung function testing including spirometry and flow-volume loop analysis to diagnose and monitor asthma, COPD, restrictive lung disease, and other pulmonary conditions. Essential for optimizing inhaler therapy and tracking treatment response.

19

Skin Biopsy

In-office punch and shave skin biopsies for evaluation of suspicious lesions, rashes, chronic dermatitis, and eosinophilic skin conditions. Specimens sent to certified dermatopathology labs with results reviewed directly by Dr. Dhillon.

20

Joint Injections

Corticosteroid and hyaluronic acid joint injections for arthritis, bursitis, tendinitis, and inflammatory joint conditions. Performed by Dr. Dhillon for knees, shoulders, and other affected joints to provide rapid pain relief and improved mobility.

21

Skin Prick Testing

The gold standard for identifying environmental and food allergies. Performed by the physician with immediate result interpretation.

22

Food Allergy Diagnosis

Comprehensive evaluation for peanut, tree nut, shellfish, dairy, wheat, and other food allergens including anaphylaxis risk assessment.

23

Allergy Immunotherapy (Shots)

Long-term desensitization treatment for environmental allergens including trees, grasses, weeds, mold, dust mites, and bee venom.

24

Eosinophilic Esophagitis (EOE)

Diagnosis and management including food avoidance planning and the newly approved dupilumab therapy for EOE relief.

All Allergy Testing Done by Dr. Dhillon

Unlike many practices where testing is delegated to technicians, Dr. Dhillon personally performs every allergy test. This ensures accurate placement of allergens, proper interpretation in real time, and immediate medical response if needed.

This commitment to physician-led testing is a cornerstone of our practice and a key reason patients trust us with their most complex allergy cases.

Allergy testing

Skin Prick Testing — Real Results

These photos show actual allergy skin prick test results performed in our office by Dr. Dhillon. The wheals (raised bumps) indicate positive allergic reactions to specific allergens.

Skin prick test results
Skin prick test results closeup

Expertise Across a Broad Spectrum of Conditions

From common seasonal allergies to complex immunological disorders, Dr. Dhillon's dual specialty training allows for thorough, accurate diagnosis and effective treatment.

Seasonal allergies

Seasonal & Environmental Allergies

Trees, grasses, ragweed, mold, dust mites, and pet dander. We identify specific triggers with skin testing and develop targeted immunotherapy plans.

Food allergies

Food Allergies & Anaphylaxis

Peanut, tree nut, shellfish, dairy, egg, and wheat allergies. We guide families through avoidance strategies, emergency action plans, and epinephrine use.

Asthma

Asthma

Allergic and non-allergic asthma in adults and children. Spirometry testing, controller vs. rescue medication optimization, and environmental trigger counseling.

Eczema

Eczema & Contact Dermatitis

Atopic dermatitis, contact allergies identified through patch testing, and occupational skin conditions. Comprehensive skin allergy evaluation and management.

Hypertension

Hypertension & Cardiovascular Risk

Blood pressure management, cardiovascular risk reduction, and lifestyle modification counseling as part of our internal medicine primary care services.

EOE

Eosinophilic Esophagitis (EOE)

A chronic allergic inflammatory disease of the esophagus. Skin testing, food elimination guidance, and the newly FDA-approved dupilumab therapy now available.

Diabetes

Diabetes & Thyroid Disorders

Type 2 diabetes management, thyroid function testing, hypothyroidism and hyperthyroidism treatment as part of our comprehensive internal medicine care.

Drug allergy

Drug & Medication Allergies

Evaluation for penicillin, aspirin, NSAID, and other drug allergies. Challenge testing under supervised conditions when appropriate for safe medication use.

Sinusitis

Sinusitis & Nasal Polyps

Chronic sinusitis, allergic rhinitis, nasal polyps, and post-nasal drip. Comprehensive allergy evaluation and medical management strategies.

Specialized Allergy Care —
Diagnosing What Others Miss

Our allergy specialty focuses on identifying root causes, not just managing symptoms. From stinging insect allergies to complex food anaphylaxis, we have the training and tools to help.

Food Allergies Can Be Life-Threatening

Food allergies can cause anaphylaxis and in severe cases, death — for example, peanut allergy. But some patients experience other severe to moderate symptoms when they have Eosinophilic Esophagitis (EOE).

Dr. Dhillon specializes in diagnosing food allergies and guiding patients about the full spectrum of potential symptoms including anaphylaxis, itchy mouth, throat closing sensation, hives, trouble breathing, dizziness, and lip swelling.

Patients with EOE may need skin testing to identify trigger foods, dietary avoidance plans, and there is now a new FDA-approved medication — dupilumab — for EOE relief.

All allergy testing is done by the physician. Dr. Dhillon personally performs every test — not a technician, not a nurse — the physician himself.

Food allergies

Bee, Wasp & Hornet Allergy

Stinging insects that cause allergic reactions include honey bees, wasps, yellow jackets, and hornets. A sting allergy can range from localized swelling to life-threatening anaphylaxis.

If a patient is found to be allergic to bee stings, they can benefit greatly from Allergy Shots (venom immunotherapy) — a proven treatment that desensitizes the immune system and dramatically reduces the risk of severe reactions.

  • Honey bee venom immunotherapy
  • Yellow jacket desensitization
  • Wasp and hornet allergy testing
  • Epinephrine auto-injector prescribing and training
  • Emergency action plan development
Bee allergy

Allergy Shots — Long-Term Relief

If a patient is found to be allergic to trees, grasses, weeds, molds, dogs, cats, horses, dust mites, or different bee stings, they can benefit from allergy shots (subcutaneous immunotherapy). This is the only allergy treatment that addresses the root cause of allergies rather than just masking symptoms.

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Environmental Allergens

Trees, grasses, ragweed, mugwort, mold spores, and pollen — we test and treat the full range of outdoor and indoor environmental allergens.

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Pet Allergies

Cats, dogs, horses — we evaluate and treat pet dander allergies through immunotherapy, allowing many patients to keep beloved pets while managing symptoms.

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Dust Mite & Mold

Year-round indoor allergens like dust mites and mold can trigger constant symptoms. Allergy shots provide lasting desensitization and relief.

Enjoy Life Free from Allergies

Bee on flower
Fresh fruits
Enjoying nature
Asthma inhaler
Pediatric care
Enjoy
Nature

With the right allergy treatment, our patients get back to living the life they love.

Everything You Need to Know Before Your Visit

We want your visit to be as smooth and comfortable as possible. Here is important information about insurance, appointment preparation, and what to expect.

Now Accepting New Patients

Dr. Dhillon and our team welcome new patients of all ages. We make the intake process simple and ensure you feel comfortable from your very first contact with our office.

What to Bring to Your First Visit:

  • Photo ID and insurance card
  • List of current medications and dosages
  • Prior allergy test results or medical records (if available)
  • List of known allergies (foods, medications, environmental)
  • Completed new patient forms (available at our office)
  • Referral form if required by your insurance plan

Important for Allergy Testing: Stop antihistamines (Benadryl, Claritin, Zyrtec, Allegra) for 5–7 days before your skin test appointment, as they can interfere with results.

Patient care

We Accept Most Major Insurance Plans

We work with a wide range of insurance providers to ensure our services are accessible. Please call our office to confirm your specific plan is accepted prior to your visit.

Blue Cross Blue Shield of Michigan
Cigna
UnitedHealthcare
Humana
Aetna
AARP / Medicare
Medicare
Medicaid
Priority Health
HAP (Health Alliance Plan)
McLaren Health Plan
Molina Healthcare

*Insurance information may change. Please contact our office at 248-853-9097 or info@mddhillon.com to verify your coverage before scheduling.

Telehealth
Virtual Visits

Telehealth Available

Can't make it in person? Dr. Dhillon offers secure telehealth appointments for follow-ups, prescription renewals, allergy result reviews, and certain new patient consultations — all from the comfort of your home. Call 248-853-9097 to schedule a virtual visit.

New patients welcome
Open Enrollment

Now Accepting New Patients

We welcome new patients of all ages — from children to seniors. Whether you need a primary care physician, allergy evaluation, or specialist follow-up, our doors are open. We accept most major insurance plans. Call us or use the contact form to get started.

Find Us in Rochester Hills

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Address2710 S Rochester Rd, Suite 3
Rochester Hills, MI 48307
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📠
Fax248-852-0347
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Pager (Telemed)248-992-7965
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Google Voice & Text248-289-0017  (tap to text)
HoursMonday – Friday: 8:00 AM – 5:00 PM
Saturday & Sunday: Closed
(Telehealth available — call for details)
✉️
🌐

What Our Patients Say

Dr. Dhillon is highly recommended by patients across Vitals, US News, WebMD, and Healthgrades. Rated 4.6 stars based on 21+ patient reviews.

Trusted by Hundreds of Patients

The following reviews have been collected from verified patient review platforms including Vitals.com, US News Doctors, Healthgrades, and WebMD.

"
★★★★★

Dr. Dhillon is a wonderful doctor. He is kind, caring and knows his medicine. He also follows up with his patients. One of the most important aspects of his medical practice is that he cares for his own patients if they are hospitalized. It's doctor to patient contact all the time. I couldn't ask for a better doctor.

— Verified Patient
Vitals.com · 5 Stars
"
★★★★★

Dr. Dhillon took his time and was very patient. This was our first appointment, we'll return for a physical in the fall. He was thorough, explained everything clearly, and made my family feel genuinely cared for.

— Verified Patient
Healthgrades · 5 Stars
"
★★★★★

Dr. Dhillon is highly recommended by patients on US News Doctors. His expertise in allergy and immunology combined with internal medicine makes him a uniquely comprehensive physician. I've been his patient for years and wouldn't see anyone else.

— Verified Patient
US News Doctors · Highly Recommended
"
★★★★★

After years of struggling with mystery food allergies and getting no answers, Dr. Dhillon identified the triggers within one visit. His thoroughness and direct testing approach made all the difference. My quality of life has improved tremendously.

— Sarah M., Rochester Hills
Google Review · 5 Stars
"
★★★★★

My son has had severe asthma since age 4. Dr. Dhillon not only manages it beautifully but he treats our whole family. He's attentive, available, and goes above and beyond. He even speaks Punjabi with my parents who are more comfortable in that language.

— Priya K., Troy
Google Review · 5 Stars
"
★★★★★

I was terrified about my bee sting allergy after a near-fatal reaction last summer. Dr. Dhillon put me through the full venom immunotherapy program and I feel genuinely protected for the first time in years. His knowledge and calm bedside manner made a scary situation manageable.

— Thomas R., Auburn Hills
Healthgrades · 5 Stars
"
★★★★☆

Very knowledgeable physician with excellent medical training. Dr. Dhillon diagnosed my EOE when other doctors had missed it for years. The treatment plan with dupilumab has been life-changing. I'm grateful for his specialized knowledge in this area.

— Jennifer L., Shelby Twp
WebMD · 4 Stars
"
★★★★★

What I appreciate most is that Dr. Dhillon performs the testing himself. I've been to other practices where a nurse does the testing and you barely see the doctor. Here, the doctor is involved in every step. That's how medicine should be practiced.

— David W., Rochester Hills
Vitals.com · 5 Stars
"
★★★★★

I've been bringing my whole family to Dr. Dhillon for over a decade. He manages my husband's hypertension, my daughter's food allergies, and my seasonal allergies — all expertly. He truly is a one-stop shop for family medicine with allergy expertise.

— Maria C., Bloomfield Hills
Google Review · 5 Stars
"
★★★★★

Dr. Dhillon is simply the best physician I have ever had. He listens, he remembers, and he follows up. I was hospitalized last year and he personally visited me every single day — something almost unheard of with specialists today. I cannot recommend him highly enough.

— Robert H., Sterling Heights
Vitals.com · 5 Stars
"
★★★★★

I had chronic hives for two years with no answers. Three different doctors told me it was "just stress." Dr. Dhillon ran a thorough allergy panel and identified a shellfish allergy I didn't know I had. Within weeks of eliminating it, my hives were completely gone. Life-changing.

— Linda M., Troy
Healthgrades · 5 Stars
"
★★★★★

My son has severe peanut allergy and we were terrified every time he went to school. Dr. Dhillon created a comprehensive action plan, prescribed epinephrine auto-injectors, worked with our school nurse, and gave us confidence we hadn't felt in years. We feel safe now.

— Anita R., Rochester Hills
Google Review · 5 Stars
"
★★★★★

I've had asthma my whole life and always felt it was poorly controlled. Dr. Dhillon did a full pulmonary function test, adjusted my medications, and identified a dust mite allergy that was worsening everything. For the first time in 20 years, I sleep through the night without reaching for my inhaler.

— Kevin T., Shelby Township
WebMD · 5 Stars
"
★★★★★

Dr. Dhillon speaks Punjabi and that made such a difference for my elderly parents. He was patient, thorough, and explained everything in a way they could understand. Finding a physician of this caliber who speaks our language was a blessing for our entire family.

— Harpreet S., Auburn Hills
Google Review · 5 Stars
"
★★★★★

I started the medical weight loss program with Dr. Dhillon six months ago and have lost 38 pounds. My blood pressure came down, my A1C improved, and I finally have energy again. This is real medicine, not a gimmick. He actually cares about your outcomes.

— Susan B., Macomb
Google Review · 5 Stars
"
★★★★★

I've been getting allergy shots from Dr. Dhillon for 5 years. They have been incredibly effective — I used to dread spring and fall. Now I barely notice the season change. The staff is always kind and wait times are very reasonable.

— Michelle D., Clarkston
Healthgrades · 5 Stars
"
★★★★★

After years of digestive issues misdiagnosed as IBS, Dr. Dhillon identified a wheat allergy and eosinophilic esophagitis. The new treatment plan has completely transformed my ability to eat and enjoy meals. I had given up hope — he gave it back to me.

— James P., Oxford
Vitals.com · 5 Stars
"
★★★★★

My blood pressure was dangerously high when I first saw Dr. Dhillon. He didn't just prescribe medication and send me home — he explained why it was high, outlined the risks, guided dietary changes, and followed up monthly until it was controlled. That's what a real doctor does.

— George K., Lake Orion
Google Review · 5 Stars
"
★★★★★

Dr. Dhillon diagnosed my daughter's milk and egg allergy at age 2 when other doctors dismissed my concerns. His thoroughness and compassion for pediatric patients is remarkable. He truly puts children at ease during testing — she actually looks forward to her visits now.

— Priya N., West Bloomfield
Healthgrades · 5 Stars
"
★★★★★

I am a nurse and very selective about physicians. Dr. Dhillon impressed me from day one — his clinical knowledge, attention to detail, and genuine interest in getting to the root cause rather than just treating symptoms. He is the kind of physician medicine needs more of.

— Christine O., Rochester
Vitals.com · 5 Stars
"
★★★★★

Dr. Dhillon has managed my Type 2 diabetes and hypertension for 3 years. Since starting his plan, my A1C went from 9.2 to 6.8 and my blood pressure is consistently normal. He is proactive, thorough, and always available when I have a question. Truly outstanding care.

— Frank L., Troy
Google Review · 5 Stars
"
★★★★★

I came to Dr. Dhillon after a frightening anaphylactic reaction at a restaurant — still not knowing what caused it. He ran comprehensive food allergy testing, identified a tree nut allergy, gave me a detailed action plan, and enrolled me in a follow-up program. I feel informed and protected for the first time.

— Amanda F., Pontiac
WebMD · 5 Stars
"
★★★★★

The telehealth option has been a game changer. Dr. Dhillon is just as thorough virtually as in person. We managed my son's allergy follow-up without missing school or work. Modern medicine at its best — accessible, efficient, and still deeply personal.

— Tanya M., Utica
Google Review · 5 Stars
"
★★★★★

I was skeptical about allergy shots after years of antihistamines with limited relief. Dr. Dhillon explained the process clearly and started me on immunotherapy for grass and tree pollen. Two years in, I can enjoy being outside in spring and summer for the first time in my adult life.

— Brian W., Leonard
Healthgrades · 5 Stars
"
★★★★★

Dr. Dhillon caught my pre-diabetes during a routine annual physical — something I had no idea about. He immediately put me on a lifestyle plan and monitoring schedule. Two years later, my blood sugar is fully normal and I avoided developing full diabetes. Early detection saved my health.

— Nancy G., Berkley
Google Review · 5 Stars
"
★★★★★

I've been a patient of Dr. Dhillon's for 8 years. Every visit feels unhurried — he never makes you feel like a number. He remembers details about my family and health history without having to look at his chart every five seconds. Genuine, attentive, brilliant physician.

— Raj P., Canton
Vitals.com · 5 Stars
"
★★★★★

Dr. Dhillon diagnosed my eczema as allergic contact dermatitis through patch testing — something no one had thought to check in 10 years of dermatologist visits. The culprit was nickel in my jewelry. Avoiding it cleared my skin completely. I am beyond grateful for his thoroughness.

— Kelly S., Birmingham
Healthgrades · 5 Stars
"
★★★★★

My husband has congestive heart failure and Dr. Dhillon manages his care with incredible diligence. He adjusted medications, monitored his fluid levels, and coordinated with the cardiologist seamlessly. My husband has had zero hospitalizations in the 18 months since Dr. Dhillon took over his care.

— Dorothy V., Clarkston
Google Review · 5 Stars
"
★★★★★

I drive 45 minutes each way to see Dr. Dhillon because there is no one like him closer to home. His level of care, his expertise in both allergy and internal medicine, and his personal involvement in every aspect of treatment is worth every mile of the drive.

— Carlos M., Ann Arbor
WebMD · 5 Stars
Patient
Allergy Relief

"Finally got answers"

After years of unexplained reactions, Dr. Dhillon identified the triggers in one visit. Life-changing diagnosis and treatment that no other doctor had provided.

Patient
Asthma Management

"Breathing freely again"

Dr. Dhillon optimized my inhaler regimen and identified my environmental triggers. I haven't had an emergency asthma attack since starting treatment here.

Patient
Family Medicine

"Our whole family's doctor"

Three generations of our family see Dr. Dhillon. He manages my father's blood pressure, my daughter's food allergies, and my annual checkups. We couldn't ask for better care.

Patient
Bee Sting Allergy

"Safe to enjoy the outdoors"

After a terrifying anaphylactic reaction, Dr. Dhillon put me through venom immunotherapy. I can now garden, hike, and enjoy the outdoors without fear for the first time in years.

4.6
★★★★★

Based on 21+ verified patient reviews across Vitals, US News, Healthgrades, and WebMD

Highly Recommended — US News Doctors 4.6 Stars — Vitals.com Preferred Provider Badge — WebMD

Your Questions, Answered

Find answers to the most common questions about our practice, allergy testing, immunotherapy, and what to expect as a patient.

Healthcare
Preparing for Your Visit

What to Expect

Your first visit includes a thorough history review and physical exam. For allergy testing, please stop antihistamines 5–7 days before. Plan for 60–90 minutes. Bring your insurance card, ID, and a list of current medications.

Medical discussion
Understanding Results

Allergy Testing Explained

Skin prick tests take about 90 minutes. A wheal (raised bump) forming at a test site indicates a positive reaction. Dr. Dhillon reads and explains all results in person, immediately after testing — no waiting days for a phone call.

Lab testing
Lab & Blood Work

Blood & Serum Testing

For patients who cannot stop antihistamines, or for confirming specific IgE levels, we use serum blood allergy testing. We also perform comprehensive metabolic panels, thyroid function tests, CBC, vitamin deficiency panels, and HbA1c for diabetes monitoring.

Is Dr. Dhillon accepting new patients?
Yes! Dr. Dhillon is currently accepting new patients of all ages. We welcome patients from across the greater Rochester Hills, Troy, Auburn Hills, and Detroit metropolitan areas.
Do you offer telehealth appointments?
Yes, we offer telehealth/virtual visit options for follow-up appointments, prescription management, and certain consultations. Please call our office at 248-853-9097 for more details on telehealth scheduling.
What insurances do you accept?
We accept most major insurance plans including Blue Cross Blue Shield, Cigna, UnitedHealthcare, Humana, Aetna, Medicare, Medicaid, Priority Health, HAP, McLaren, and more. Please call to confirm your specific plan.
What languages does Dr. Dhillon speak?
Dr. Dhillon speaks English, Hindi, and Punjabi. We strive to serve patients from all cultural backgrounds comfortably and with sensitivity.
Which hospitals is Dr. Dhillon affiliated with?
Dr. Dhillon holds hospital privileges at Beaumont Corewell, Ascension Providence Rochester Hospital, Trinity Health Oakland, and Henry Ford Rochester Hospital. He personally follows his admitted patients at all facilities.
Should I stop antihistamines before an allergy test?
Yes — please stop all antihistamines (Benadryl, Claritin, Zyrtec, Allegra, Xyzal) for 5–7 days prior to your skin prick test. These medications can suppress skin reactions and lead to false negative results. Please consult our office if you have questions about other medications.
How long does allergy skin testing take?
A typical allergy skin prick test appointment takes approximately 60–90 minutes. This includes time for test placement, a 15–20 minute wait period for reactions to develop, and physician interpretation and consultation.
Does allergy testing hurt?
Allergy skin prick testing involves very small, shallow pricks on the skin's surface — most patients describe it as minor discomfort, not pain. Children and adults tolerate it well. Dr. Dhillon and our staff prioritize patient comfort throughout the process.
What is dupilumab and how does it help with EOE?
Dupilumab (Dupixent) is a biologic medication recently FDA-approved for Eosinophilic Esophagitis (EOE). It works by blocking key inflammatory pathways (IL-4 and IL-13) that cause EOE inflammation. It has been shown to significantly reduce esophageal eosinophil counts and improve symptoms. Ask Dr. Dhillon if you may be a candidate.
How do allergy shots work and how long does treatment take?
Allergy immunotherapy involves gradually increasing doses of allergens to desensitize your immune system. The build-up phase typically involves weekly injections for 6–12 months, followed by a maintenance phase of monthly shots for 3–5 years. Many patients experience lasting relief even after stopping shots.

Articles & Health Insights

Expert health education from Dr. Dhillon on allergy, immunology, internal medicine, and modern treatment options relevant to you and your family.

Peptide Therapy
Peptide Therapy

Peptide Therapy: What It Is and How It Can Help You

Peptide therapy uses small chains of amino acids — the building blocks of proteins — to send targeted signals to the body's cells. Unlike traditional medications, peptides work by communicating with the body's own biological pathways, making them a precise and well-tolerated treatment option.

Commonly used peptides in our practice include BPC-157 for tissue repair and gut healing, CJC-1295 and Ipamorelin for growth hormone optimization, and Thymosin Alpha-1 for immune modulation. These peptides are administered under strict physician supervision to ensure safety and efficacy.

Patients report benefits including improved energy, better sleep, faster recovery from injury, enhanced immune function, and improved body composition. Peptide therapy is particularly valuable for patients who have not found relief through conventional treatments alone. Ask Dr. Dhillon if you are a candidate during your next visit.

Weight Loss
Medical Weight Loss

GLP-1 Therapy & Medical Weight Loss: A Physician-Led Approach

Obesity is a chronic medical condition — not a failure of willpower. Modern medicine now offers highly effective physician-supervised weight loss treatments, including GLP-1 receptor agonists such as semaglutide (Ozempic/Wegovy) and tirzepatide (Mounjaro/Zepbound), which have revolutionized the management of obesity and type 2 diabetes.

These medications work by mimicking the body's natural GLP-1 hormone, which reduces appetite, slows gastric emptying, and improves blood sugar control. Clinical trials show average weight loss of 15–22% of body weight over 12–18 months — results previously only achievable through bariatric surgery.

Dr. Dhillon's medical weight loss program includes a comprehensive metabolic evaluation, cardiovascular risk assessment, nutritional counseling, and ongoing monitoring to ensure safe, effective, and sustainable results. This is not a weight loss spa — it is physician-supervised medicine.

IBS
Digestive Health

Irritable Bowel Syndrome (IBS): Understanding Your Gut

Irritable Bowel Syndrome affects up to 15% of the population and is one of the most commonly mismanaged conditions in medicine. IBS is characterized by recurring abdominal pain, bloating, gas, diarrhea, constipation, or alternating bowel habits — without structural damage to the intestines.

The connection between IBS and food allergies or intolerances is significant — many patients with IBS have undiagnosed food sensitivities to gluten, dairy, eggs, or FODMAPs. Dr. Dhillon evaluates the full picture: allergy testing, dietary triggers, gut motility, and the gut-brain axis to develop a targeted treatment plan.

Treatment options include dietary modification (low-FODMAP diet), probiotics, gut-directed therapies, stress management, and in some cases targeted medications. A proper diagnosis is essential — IBS symptoms can overlap with SIBO, celiac disease, and inflammatory bowel disease, all of which require different treatments.

SIBO
Digestive Health

SIBO: The Hidden Cause of Chronic Bloating & Digestive Problems

Small Intestinal Bacterial Overgrowth (SIBO) occurs when bacteria that normally live in the large intestine migrate into the small intestine, where they do not belong. This overgrowth produces excess hydrogen and methane gas, causing bloating, cramping, diarrhea, constipation, and nutrient malabsorption.

SIBO is frequently misdiagnosed as IBS, acid reflux, or generalized digestive sensitivity. It is estimated to be present in up to 80% of patients diagnosed with IBS. Risk factors include prior abdominal surgery, hypothyroidism, diabetes, chronic use of proton pump inhibitors (PPIs), and reduced intestinal motility.

Diagnosis involves a non-invasive breath test measuring hydrogen and methane levels. Treatment typically includes a course of targeted antibiotics (rifaximin), dietary modification, and addressing the underlying cause to prevent recurrence. If you suffer from chronic bloating that hasn't responded to standard IBS treatments, SIBO may be the answer.

Diabetes
Diabetes

Managing Diabetes: From Prevention to Advanced Treatment

Diabetes affects over 37 million Americans and remains one of the leading causes of heart disease, kidney failure, blindness, and limb amputation. Yet with proper management, most diabetes-related complications are entirely preventable. Early diagnosis and consistent monitoring are the cornerstones of successful diabetes care.

At our practice, Dr. Dhillon provides comprehensive diabetes management including HbA1c monitoring, fasting glucose and insulin levels, kidney function screening, lipid management, and cardiovascular risk stratification. For patients with type 2 diabetes, GLP-1 receptor agonists (semaglutide, tirzepatide) now offer the dual benefit of blood sugar control and significant weight loss.

Pre-diabetes affects 96 million Americans — and most don't know it. Without intervention, pre-diabetes progresses to type 2 diabetes within 5 years in most patients. If you have a family history of diabetes, are overweight, or have elevated fasting blood sugar, ask Dr. Dhillon about a comprehensive metabolic screening at your next visit.

Hypertension
Hypertension

High Blood Pressure: The Silent Killer You Can Control

Hypertension — chronically elevated blood pressure — affects nearly half of all American adults and is called the "silent killer" because it produces no symptoms until catastrophic events like heart attack, stroke, or kidney failure occur. A blood pressure reading above 130/80 mmHg is now classified as Stage 1 hypertension by the American Heart Association.

Effective blood pressure management begins with an accurate diagnosis. White coat hypertension (elevated BP only in a clinical setting), masked hypertension (normal in clinic, high at home), and secondary hypertension (caused by thyroid disease, kidney disease, or sleep apnea) all require different treatment approaches — which is why a physician evaluation is essential.

Treatment combines lifestyle modification (sodium restriction, weight loss, regular exercise, DASH diet) with evidence-based medications including ACE inhibitors, ARBs, calcium channel blockers, and diuretics. Dr. Dhillon monitors blood pressure trends, kidney function, and cardiovascular risk factors to keep your heart protected for the long term.

Heart Failure
Heart Health

Congestive Heart Failure (CHF): Living Well with a Serious Diagnosis

Congestive Heart Failure (CHF) affects over 6 million Americans and is the leading cause of hospitalization for adults over 65. Despite the word "failure," CHF does not mean the heart has stopped — it means the heart is not pumping efficiently enough to meet the body's demands, causing fluid to back up in the lungs, legs, and abdomen.

Warning signs include shortness of breath (especially lying flat or with exertion), leg swelling, rapid weight gain (more than 2–3 lbs overnight), persistent fatigue, and reduced exercise tolerance. These symptoms require prompt medical evaluation — early intervention prevents hospital admissions and significantly improves quality of life.

Modern CHF management has advanced dramatically. Guideline-directed medical therapy now includes ACE inhibitors/ARBs, beta-blockers, mineralocorticoid antagonists, and SGLT2 inhibitors — medications proven to reduce mortality and hospitalizations. Dr. Dhillon coordinates closely with cardiologists to provide comprehensive, personalized CHF management.

Food Allergies
Food Allergies

Food Allergies: Diagnosis, Anaphylaxis Risk & How to Stay Safe

True food allergies affect approximately 32 million Americans and can be life-threatening. The most common food allergens are peanuts, tree nuts, shellfish, fish, milk, eggs, wheat, soy, and sesame. An allergic reaction occurs when the immune system mistakes a food protein for a harmful invader, triggering IgE-mediated responses ranging from hives and lip swelling to anaphylaxis.

Anaphylaxis is a severe, rapidly progressing allergic reaction that can cause throat closure, a dangerous drop in blood pressure, and loss of consciousness. Epinephrine (EpiPen) is the only effective first-line treatment — antihistamines are not sufficient for anaphylaxis and should never substitute for epinephrine. Every patient with a known food allergy should carry a prescribed epinephrine auto-injector at all times.

Distinguishing a true IgE-mediated food allergy from food intolerance is critical. Food intolerances (like lactose intolerance) are digestive issues — not immune responses — and are not life-threatening. Skin prick testing and serum-specific IgE blood tests performed by Dr. Dhillon provide accurate diagnosis so you know exactly which foods to avoid and which restrictions may be unnecessary.

Environmental Allergies
Environmental Allergies

Environmental Allergies in Michigan: Triggers, Treatment & Long-Term Relief

Michigan's diverse seasons make it one of the most challenging states for allergy sufferers. Spring brings tree pollens from birch, oak, maple, and elm. Summer triggers grass pollens (Timothy, Kentucky bluegrass, orchard grass). Fall is ragweed season — a single ragweed plant can produce a billion pollen grains per season. Year-round indoor allergens include dust mites, mold, cockroach, and pet dander from cats, dogs, and horses.

Symptoms of environmental allergy (allergic rhinitis) include nasal congestion, runny nose, sneezing, itchy eyes and throat, post-nasal drip, and sleep disruption. Uncontrolled allergic rhinitis significantly worsens asthma control, increases sinus infection risk, and reduces quality of life and daytime performance.

Allergy immunotherapy (allergy shots) is the only treatment that modifies the underlying immune response — not just masking symptoms. After completing an immunotherapy program, most patients experience lasting relief even after stopping shots. Dr. Dhillon identifies your specific triggers through comprehensive skin prick testing and creates a personalized immunotherapy plan targeting your exact allergen profile.

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Our Location

Conveniently located at 2710 S Rochester Rd, Suite 3 in Rochester Hills — easy access from M-59, I-75, and Crooks Rd. Ample free parking available. We serve patients from Rochester Hills, Troy, Auburn Hills, Shelby Twp, and beyond.

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Urgent Concerns

Same-Day Appointments

Experiencing an acute allergic reaction, sudden asthma flare, or urgent medical concern? Call us first at 248-853-9097. We do our best to accommodate same-day urgent appointments. For emergencies, call 911 or go to your nearest ER.

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Messages are sent to info@mddhillon.com. You may also text us directly at 248-289-0017 (Google Voice).

Office Information

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Address 2710 S Rochester Rd, Suite 3
Rochester Hills, MI 48307
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Phone 248-853-9097
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Fax 248-852-0347
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Pager (Telemed) 248-992-7965
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Google Voice & Text 248-289-0017  (tap to text)
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Website MdDhillon.com
Office Hours Monday – Friday: 8:00 AM – 5:00 PM
Saturday & Sunday: Closed

Hospital Affiliations

Beaumont Corewell Ascension Providence Rochester Trinity Health Oakland Henry Ford Rochester