The 5 Best Allergists in Delaware
Board-certified allergy & asthma specialists in Wilmington, Newark.
If over-the-counter antihistamines aren't cutting it anymore, a board-certified allergist-immunologist can pinpoint exactly what you're reacting to and build a treatment plan — including immunotherapy that can reduce your sensitivity for good. Our editors researched allergists across Delaware and curated the five standouts below based on board certification, affiliations, peer recognition, and patient reputation. Before your visit, check today's pollen levels in Delaware so you can tell your doctor what was in the air when your symptoms flared.
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Gregory V. Marcotte, MD
ENT & Allergy of Delaware / ChristianaCare
Wilmington, DE
Board-certified in Adult and Pediatric Allergy & ImmunologySection Chief, Division of Allergy & Immunology, ChristianaCare Health SystemCastle Connolly Top Doctor (2024)Philadelphia Magazine Top DoctorDr. Marcotte serves as Section Chief for the Division of Allergy & Immunology at ChristianaCare Health System, Delaware's largest health care organization, and practices with ENT & Allergy of Delaware. He is board certified in both adult and pediatric allergy and immunology and has been voted by physician peers as one of the best allergists in Delaware annually, with Castle Connolly Top Doctor recognition in 2024.
Areas of focus: Asthma · Allergic rhinitis · Food allergies · Drug allergy · Immunotherapy
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Sokun Ky Bhatti, MD
ENT & Allergy of Delaware / ChristianaCare
Newark, DE
Board-certified in Allergy & ImmunologyCastle Connolly Top Doctor (2024, multiple consecutive years)Philadelphia Magazine Top Doctor (multiple years)Dr. Bhatti is a board-certified allergist and immunologist affiliated with ChristianaCare and ENT & Allergy of Delaware, treating patients across the Wilmington and Newark area. She has been recognized as a Castle Connolly Top Doctor for multiple consecutive years and as a Philadelphia Magazine Top Doctor, placing her among the top 7% of physicians nationally.
Areas of focus: Allergy testing · Asthma · Environmental allergies · Immunotherapy · Pediatric and adult allergy
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Junfang Jiao, MD, PhD
ENT & Allergy of Delaware / ChristianaCare
Newark, DE
Board-certified in Allergy & ImmunologyBoard-certified in Internal MedicinePhD in Molecular Biology, University of DelawareCastle Connolly Top Doctor (2024)Dr. Jiao is a board-certified allergist-immunologist and PhD scientist, combining clinical expertise with deep research training in molecular biology and virology from the University of Delaware, University of Pennsylvania, and Children's Hospital of Philadelphia. He completed his allergy fellowship at Washington University in St. Louis/St. Louis Children's Hospital and has received Castle Connolly Top Doctor recognition.
Areas of focus: Adult and pediatric allergy · Immunologic diseases · Asthma · Research-informed immunotherapy
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Richard H. Kim, MD
Private Practice / ChristianaCare Affiliated
Wilmington, DE
Board-certified in Allergy & ImmunologyBoard-certified in Internal MedicineDr. Kim has been in private practice in allergy and immunology in Wilmington, Delaware, since 1991, making him one of the state's longest-tenured allergists. He is board certified in both internal medicine and allergy & immunology and is affiliated with ChristianaCare Hospitals, providing care to the greater Wilmington area.
Areas of focus: Allergic and respiratory conditions · Asthma · Environmental allergies · Immunotherapy
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Trong Le, MD
Nemours Children's Health
Wilmington, DE
Board-certified in Allergy & ImmunologyBoard-certified in PediatricsAffiliated with Nemours Children's Hospital, DelawareDr. Le is a board-certified pediatric allergist-immunologist at Nemours Children's Health in Wilmington, one of Delaware's leading academic children's health systems. He is affiliated with Nemours Children's Hospital, Delaware, providing comprehensive allergy and immunology care for infants, children, and adolescents across the state.
Areas of focus: Pediatric allergy and immunology · Food allergies · Asthma · Eczema · Immune deficiency
How we chose the best allergists in Delaware
Our editorial team researched allergy and immunology specialists practicing across Delaware and selected these five based on:
- Board certification in Allergy & Immunology (ABAI)
- Hospital and academic affiliations with respected medical centers
- Peer recognition, including Top Doctor awards and professional society roles
- Practice reputation and years of experience treating allergy and asthma patients
- Geographic spread across Delaware's major metro areas
These listings are editorial picks, not paid placements or medical endorsements, and we have no financial relationship with any provider listed. Physician availability, insurance participation, and credentials change — always verify directly with the practice before booking. This page is for informational purposes and is not medical advice.
Frequently asked questions
How do I find a good allergist in Delaware?
Look for board certification in Allergy & Immunology, hospital or academic affiliations, and an established practice. Every allergist on this list was vetted against those criteria.
Do I need a referral?
It depends on your insurance plan, not the state. Most PPO plans let you book directly; HMO plans usually require a referral from your primary care physician.
What should I bring to my first appointment?
A list of your symptoms and when they occur, your current medications, your insurance card, and any relevant medical records. A symptom diary matched against local pollen counts is especially useful for diagnosing seasonal allergies.
Track Delaware pollen before your visit
Allergists can diagnose you faster when you know which days your symptoms flared and what was in the air. MyPollenPal tracks daily tree, grass, and weed pollen levels for cities across Delaware.