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Gastroenterologists in Maryland

Data updated monthly · Last refresh October 2026

503 Gastroenterology providers practice in Maryland, including 200 (40%) offering telehealth. The largest concentration is in Baltimore. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

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200telehealth
Baltimoretop city

Gastroenterology by city in Maryland

Choose a city to see providers there.

Gastroenterology in Baltimore132 providers
Gastroenterology in Rockville38 providers
Gastroenterology in Bethesda35 providers
Gastroenterology in Columbia24 providers
Gastroenterology in Annapolis24 providers
Gastroenterology in Frederick23 providers
Gastroenterology in Silver Spring21 providers
Gastroenterology in Chevy Chase17 providers
Gastroenterology in Laurel14 providers
Gastroenterology in Lutherville11 providers
Gastroenterology in Hagerstown11 providers
Gastroenterology in Towson10 providers
Gastroenterology in Catonsville10 providers
Gastroenterology in Glen Burnie7 providers
Gastroenterology in Waldorf7 providers
Gastroenterology in Greenbelt6 providers
Gastroenterology in Clinton6 providers
Gastroenterology in Oxon Hill6 providers
Gastroenterology in Prince Frederick6 providers
Gastroenterology in Abingdon6 providers
Gastroenterology in Easton6 providers
Gastroenterology in Berlin5 providers
Gastroenterology in Olney5 providers
Gastroenterology in Bowie5 providers

Gastroenterology providers in Maryland

Listed by city, largest first. 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. Ashish Nimgaonkar
Baltimore, MD · $166 in drug and device payments (2025) · (443) 287-1960
Dr. Bruce Greenwald, M.D.
Baltimore, MD · $195 in drug and device payments (2025) · Telehealth · (410) 328-8731
Dr. Christopher Kim, M.D.
Baltimore, MD · $34 in drug and device payments (2025) · (667) 234-2200
Dr. Cynthia Tsay
Baltimore, MD · $74 in drug and device payments (2025) · Telehealth · (410) 955-2635
Dr. Daniel Bernstein, MD
Baltimore, MD · No drug or device payments recorded (2025) · (410) 550-0100
Dr. David Tilley, MD
Baltimore, MD · No drug or device payments recorded (2025) · (410) 338-3016
Dr. Disha Sharma
Baltimore, MD · $363 in drug and device payments (2025) · Telehealth · (410) 328-5780
Dr. Donald Wilson, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 706-7163
Dr. Eduardo Gonzalez-velez, MD
Baltimore, MD · $203 in drug and device payments (2025) · (410) 328-5780
Dr. Edward Zimmerman, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 602-7782
Dr. Elaine Yong, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 955-5274
Dr. Elham Afghani, M.D.
Baltimore, MD · $1,065 in drug and device payments (2025) · Telehealth · (410) 955-9697
Dr. Ellen Stein, M.D.
Baltimore, MD · $80 in drug and device payments (2025) · Telehealth · (410) 614-6708
Dr. Eric Blum, M.D.
Baltimore, MD · $1,422 in drug and device payments (2025) · (410) 602-7782
Dr. Eric Goldberg, M.D.
Baltimore, MD · $12,592 in drug and device payments (2025) · (410) 328-8730
Dr. Erik Vonrosenvinge, MD
Baltimore, MD · $85 in drug and device payments (2025) · (410) 328-8750
Dr. Ernest Tsao, MD
Baltimore, MD · $540 in drug and device payments (2025) · (410) 602-7782
Dr. Esteban Mezey, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 933-4397
Dr. Ethan Dubin, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 356-2306
Dr. Eun Shin, M.D.
Baltimore, MD · $23,559 in drug and device payments (2025) · (410) 955-9697
Dr. Farhan Ali, DO
Baltimore, MD · $2,105 in drug and device payments (2025) · (410) 328-8730
Dr. Francis Giardiello, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 955-4166
Dr. Geoffrey Nguyen, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 955-2635
Dr. George Fantry, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 328-8732
Dr. George Kunnackal John, M.D., MSC
Baltimore, MD · $817 in drug and device payments (2025) · Telehealth · (410) 328-5780
Dr. George Vranian, MD
Baltimore, MD · No drug or device payments recorded (2025) · (410) 828-7100
Dr. Gerard Mullin, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · Telehealth · (410) 955-4166
Dr. Guofeng Xie, MD
Baltimore, MD · $22 in drug and device payments (2025) · (410) 328-5793
Dr. Harinder Raipuria, DNP, APRN, FNP-C
Baltimore, MD · No drug or device payments recorded (2025) · (917) 200-8305
Dr. Jahangir Khan, M.D.
Baltimore, MD · $177 in drug and device payments (2025) · (410) 687-7010
Dr. James Hamilton, M.D.
Baltimore, MD · $4,354 in drug and device payments (2025) · (410) 614-3530
Dr. James Novick, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 321-4900
Dr. Jean-pierre Raufman, M.D.
Baltimore, MD · $85 in drug and device payments (2025) · (410) 328-8728
Dr. Jesus Dominguez, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 955-7911
Dr. Joanna Melia, M.D.
Baltimore, MD · $340 in drug and device payments (2025) · Telehealth · (434) 825-2733
Dr. John Rabine, M.D.
Baltimore, MD · $1,851 in drug and device payments (2025) · Telehealth · (410) 601-5392
Dr. Jonathan Schreiber, MD
Baltimore, MD · $255 in drug and device payments (2025) · Telehealth · (410) 332-9195
Dr. Jose Mari Parungao, M.D.
Baltimore, MD · $212 in drug and device payments (2025) · Telehealth · (443) 777-2475
Dr. Joseph Lin, M.D.
Baltimore, MD · $1,566 in drug and device payments (2025) · (410) 661-9133
Dr. Joshua Forman, M.D.
Baltimore, MD · $2,349 in drug and device payments (2025) · Telehealth · (410) 296-4210
Dr. Julian Jakobovits, MD
Baltimore, MD · $19 in drug and device payments (2025) · (410) 580-0900
Dr. Kathy Bull-henry
Baltimore, MD · $6 in drug and device payments (2025) · (410) 550-2360
Dr. Kenneth Margolis, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 687-0202
Dr. Kenolisa Onwueme, M.D., PH.D.
Baltimore, MD · $25,630 in drug and device payments (2025) · (410) 602-7782
Dr. Kimberly Gudzune, MD
Baltimore, MD · No drug or device payments recorded (2025) · (410) 955-3707
Dr. Lawrence Mills, MD
Baltimore, MD · $249 in drug and device payments (2025) · Telehealth · (410) 532-4372
Dr. Lester Bowser, M.D.
Baltimore, MD · $15 in drug and device payments (2025) · Telehealth · (410) 602-7782
Dr. Lila Tarmin, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 602-7782
Dr. Loc Le, M.D.
Baltimore, MD · $2,509 in drug and device payments (2025) · (410) 602-7782
Dr. Maaza Abdi, M.D.
Baltimore, MD · $678 in drug and device payments (2025) · Telehealth · (410) 747-5520

Conditions Gastroenterology providers in Maryland 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 Maryland?

There are 503 Gastroenterology providers with active NPI records practicing in Maryland, according to federal NPPES data refreshed monthly.

Do Gastroenterology providers in Maryland offer telehealth?

Yes. 200 of the 503 Gastroenterology providers in Maryland (about 40%) report offering telehealth services in CMS data.

Which cities in Maryland have the most Gastroenterology providers?

Baltimore (132), Rockville (38), Bethesda (35) have the highest concentration of Gastroenterology providers in Maryland.

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

325 of 503 Gastroenterology providers in Maryland (65%) 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 Maryland treat?

Gastroenterology providers 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 counts and profiles 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.

Do most Gastroenterologists in Maryland work in independent practices or large health systems?

Among 305 Gastroenterologists in Maryland enrolled in Medicare, 14% bill through a solo or small practice with fewer than 10 clinicians, 20% through a mid-size group of 10 to 99, and 66% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Gastroenterologists in Maryland work at?

According to CMS facility affiliation records, the Maryland hospitals where the most Gastroenterologists hold privileges are Johns Hopkins Hospital, the in Baltimore; Johns Hopkins Bayview Medical Center in Baltimore; Adventist Healthcare Shady Grove Medical Center in Rockville.

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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. Are you a Gastroenterology in Maryland? Get featured.