Dr. Gregory Marcotte, MD, Wilmington, DE

What patients are saying

Overall rating

4.95

Average wait time

4.17

Bedside manner

5.00

“I needed an appointment quickly and they were very accommodating. The doctor and his staff are friendly and caring. I would highly recommend this practice ”

Patricia F.March 19, 2026

“I have been seeing Dr Marcotte for YEARS. I love him. He’s helpful and knowledgeable, and is always very friendly. Multiple members of family see him also. I also love the Foulk Rd office. Everyone from check in to shot administration are super friendly, and always make you feel welcome. ”

Alexa D.January 31, 2026

About Dr. Gregory Marcotte

Dr. Gregory Marcotte began his private practice of Allergy and Immunology in Wilmington, Delaware in 1997, taking care of patients and their families with all types of allergic diseases. Dr. Marcotte started college at Cornell University planning to go to veterinary school. After a trip to the emergency room for an allergy attack while working on a dairy farm his freshman summer, he changed majors to Cell Biology. He graduated with Distinction and Honors, and planned for medical school. He spent a year working as a laboratory technician at the Johns Hopkins University Division of Allergy and Immunology. He attended medical school at New York University, did his residency at the University of Colorado/National Jewish Hospital, and then returned to Johns Hopkins to complete his Allergy and Immunology Fellowship. He is board-certified in Adult and Pediatric Allergy and Immunology. Dr. Marcotte has written several peer reviewed papers, given countless talks to fellow physicians and is involved in training the residents at both the Christiana Care and the St. Francis residency programs. He is currently the Section Chief for the Division of Allergy & Immunology at Christiana Care Health Services System and is past President and member of the Delaware Allergy Society. He is a Fellow of both the American Academy of Asthma, Allergy and Immunology; and the American College of Asthma, Allergy and Immunology and member of the Pennsylvania Allergy and Asthma Association, the American College of Physicians and the American Medical Association. Dr. Marcotte volunteers time for the American Lung Association of Delaware (serves as medical director for the annual Asthma Camp) and the Food Allergy and Anaphylaxis Network branch in Delaware. He has received multiple awards in Delaware including being voted by his physician peers as one of the Best Allergists in Delaware annually and “Top Doc” of all doctors in all of Delaware in 2009.

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Areas of expertise

This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.

Acute sinusitis

Immune deficiency disease

Chronic nose and throat inflammation due to allergies

Asthma

Allergic skin reaction with hives

Acute sinusitis

Immune deficiency disease

Chronic nose and throat inflammation due to allergies

Asthma

Office location

ENTAD - Foulktstone Plaza

1401 Foulk Rd, Ste 205, Wilmington, DE 19803

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Education and background

Practice names

ENT & Allergy of Delaware

Board certifications

American Board of Allergy and Immunology

Education and training

Medical School - New York University, Doctor of Medicine
University of Colorado Denver, Residency in Internal Medicine
The Johns Hopkins University School of Medicine, Fellowship in Allergy and Immunology
Cornell University (Bachelor's)

Professional memberships

American Academy of Allergy, Asthma, and Immunology
American College of Physicians
American Medical Association

Awards and publications

DelawareToday Top Doctor
2025 Castle Connolly Top Doctors
2024 Castle Connolly Top Doctors

Languages spoken

English

Provider's gender

Male

NPI number

1861470767

Patient reviews

All reviews have been submitted by patients after interacting with the practice.

Overall rating

4.95

Wait time

4.17

Bedside manner

5.00

Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here

37 reviews

Most relevant

Dr. Marcotte has been my allergist for years. Great doctor!

February 6, 2026Susan S.Verified patient

I needed an appointment quickly and they were very accommodating. The doctor and his staff are friendly and caring. I would highly recommend this practice

March 19, 2026Patricia F.Verified patient

I have been seeing Dr Marcotte for YEARS. I love him. He’s helpful and knowledgeable, and is always very friendly. Multiple members of family see him also. I also love the Foulk Rd office. Everyone from check in to shot administration are super friendly, and always make you feel welcome.

January 31, 2026Alexa D.Verified patient

Less than 1 month agoInitials hidden

February 13, 2026Christian I.Verified patient

February 10, 2026Sara V.Verified patient

Less than 1 year agoInitials hiddenSource: Partner

Frequently asked questions

How soon can I make an appointment with Dr. Gregory Marcotte?

Generally, Dr. Gregory Marcotte has appointments available on Zocdoc within 1 week. You can see Dr. Marcotte's earliest availability on Zocdoc and make an appointment online.

Is Dr. Gregory Marcotte accepting new patients?

Dr. Gregory Marcotte generally accepts new patients on Zocdoc. You can see Dr. Marcotte's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. Gregory Marcotte accept my insurance?

Choose your insurance plan to verify if Dr. Marcotte is in-network.

Can I make an appointment with Dr. Gregory Marcotte online?

Yes, you can make an appointment online with Dr. Marcotte using Zocdoc. It’s simple, secure, and free.

What practice does Dr. Gregory Marcotte work with?

Dr. Gregory Marcotte works with ENT & Allergy of Delaware.

Where is Dr. Gregory Marcotte's office located?

Dr. Gregory Marcotte's office is located at 1401 Foulk Rd, Wilmington, DE 19803.

Which board certifications does Dr. Gregory Marcotte have?

Dr. Gregory Marcotte is certified by American Board of Allergy and Immunology.

What are common reasons for patients to see Dr. Gregory Marcotte?

Dr. Gregory Marcotte frequently sees patients for Allergy Consultation, Illness, Infection Consultation, Rash, and Sinus Problems / Sinusitis. You can see other visit reasons for Dr. Gregory Marcotte on their profile.

What languages does Dr. Gregory Marcotte speak?

Dr. Gregory Marcotte speaks English.

How do patients rate Dr. Gregory Marcotte in reviews?

37 patients have reviewed Dr. Gregory Marcotte. The overall rating for this doctor is 4.95/5. They have a 5/5 rating for bedside manner and a 4.17/5 rating for wait time. You can read individual reviews and ratings on their profile.