HealthcareDiscovery.AI / Doctors / New York / Great Neck / Gastroenterology

Gastroenterology in Great Neck, New York

Data updated monthly · Last refresh September 2026

29 Gastroenterology providers practice in Great Neck, and 72% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Gastroenterology providers in Great Neck

Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Alan Sloyer, MD
Great Neck, NY · $2,453 in drug and device payments (2025) · Telehealth · (516) 487-2444
Dr. Alex Novogrudsky, M.D.
Great Neck, NY · $63 in drug and device payments (2025) · Telehealth · (516) 487-2444
Dr. Andy Fan, M.D.
Great Neck, NY · $129 in drug and device payments (2025) · (516) 482-6747
Dr. Arthur Talansky, MD
Great Neck, NY · $2,559 in drug and device payments (2025) · Telehealth · (516) 487-2444
Dr. Chaim Abittan, MD
Great Neck, NY · $2,565 in drug and device payments (2025) · Telehealth · (516) 487-2444
Dr. Chaim Ross, M.D.
Great Neck, NY · No drug or device payments recorded (2025) · Telehealth · (516) 248-3737
Dr. David Magier, M.D.
Great Neck, NY · $3,735 in drug and device payments (2025) · Telehealth · (516) 482-6747
Dr. David Milkes, MD
Great Neck, NY · $2,591 in drug and device payments (2025) · Telehealth · (516) 487-2444
Dr. Eric Zhao, MD
Great Neck, NY · $253 in drug and device payments (2025) · (856) 834-6189
Dr. Gina Kwak, M.D.
Great Neck, NY · $2,190 in drug and device payments (2025) · Telehealth · (516) 487-7677
Dr. Howard Rattner, MD
Great Neck, NY · $2,596 in drug and device payments (2025) · Telehealth · (516) 427-2444
Dr. John Costable, MD
Great Neck, NY · $298 in drug and device payments (2025) · (516) 466-6075
Dr. Jose Ortiguera, M.D.
Great Neck, NY · No drug or device payments recorded (2025) · (631) 897-7310
Dr. Lawrence Koblenz, MD
Great Neck, NY · $3,440 in drug and device payments (2025) · (718) 708-7000
Dr. Matthew Horowitz, M.D.
Great Neck, NY · No drug or device payments recorded (2025) · Telehealth · (516) 482-0600
Dr. Michael Goldstein, M.D.
Great Neck, NY · $268 in drug and device payments (2025) · (516) 487-7677
Dr. Mitchell Locke, MD
Great Neck, NY · No drug or device payments recorded (2025) · Telehealth · (516) 482-6747
Dr. Mordecai Dicker, MD
Great Neck, NY · $2,711 in drug and device payments (2025) · Telehealth · (516) 487-2444
Dr. Morris Barnard
Great Neck, NY · $125 in drug and device payments (2025) · (516) 829-9191
Dr. Nathan Schulman
Great Neck, NY · $997 in drug and device payments (2025) · Telehealth · (516) 487-4500
Dr. Nichol Martinez, M.D.
Great Neck, NY · $373 in drug and device payments (2025) · (516) 387-3990
Dr. Raymond Diaz, MD
Great Neck, NY · $615 in drug and device payments (2025) · Telehealth · (516) 233-2838
Dr. Richard Bronzo, MD
Great Neck, NY · No drug or device payments recorded (2025) · (516) 466-5166
Dr. Robert Baker, M.D.
Great Neck, NY · No drug or device payments recorded (2025) · (516) 482-0600
Dr. Robert Herman
Great Neck, NY · $2,668 in drug and device payments (2025) · Telehealth · (516) 487-7677
Dr. Seymour Katz, M.D.
Great Neck, NY · No drug or device payments recorded (2025) · Telehealth · (516) 466-2340
Dr. Shivi Siva, MD
Great Neck, NY · $652 in drug and device payments (2025) · (516) 387-3990
Dr. Stephen Siegel, M.D.
Great Neck, NY · $1,298 in drug and device payments (2025) · (516) 487-7677
Dr. Stewart Robbins, MD
Great Neck, NY · No drug or device payments recorded (2025) · Telehealth · (516) 487-4500

Conditions Gastroenterology providers in Great Neck, New York commonly treat

Patients often search by condition rather than specialty. These are conditions typically managed by Gastroenterology providers. Individual practices vary, so confirm with the provider before booking.

Common questions

How many Gastroenterology providers are in Great Neck, New York?

There are 29 Gastroenterology providers with active NPI records practicing in Great Neck, according to federal NPPES data refreshed monthly.

How many Gastroenterology providers in Great Neck received drug or device company payments?

21 of 29 (72%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

What conditions do Gastroenterology providers in Great Neck treat?

Gastroenterology providers in Great Neck commonly treat acid reflux, IBS, Crohn disease, ulcerative colitis, celiac disease and related conditions. Individual practices vary, so confirm with the provider before booking.

Where does this data come from?

Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

All specialties in Great Neck Gastroenterology across New York

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.