HealthcareDiscovery.AI / Doctors / Maine / Gastroenterology

Gastroenterologists in Maine

Data updated monthly · Last refresh October 2026

85 Gastroenterology providers practice in Maine, including 16 (19%) offering telehealth. The largest concentration is in Portland. 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.

85providers
16telehealth
Portlandtop city

Gastroenterology by city in Maine

Choose a city to see providers there.

Gastroenterology in Portland28 providers
Gastroenterology in Bangor15 providers
Gastroenterology in Lewiston10 providers
Gastroenterology in Rockport6 providers
Gastroenterology in Biddeford6 providers
Gastroenterology in Brunswick5 providers
Gastroenterology in Augusta4 providers
Gastroenterology in Waterville3 providers
Gastroenterology in Skowhegan3 providers
Gastroenterology in Kennebunk1 providers
Gastroenterology in Pleasant Point1 providers
Gastroenterology in Hope1 providers
Gastroenterology in South Portland1 providers
Gastroenterology in Bridgton1 providers

Where Gastroenterologists in Maine practice

From CMS Medicare enrollment records covering 48 of the 85 providers listed here (56%). Providers who do not bill Medicare are not included in these figures.

2%solo or small practice (under 10 clinicians)
31%mid-size group (10 to 99)
67%large group or health system (100+)

Largest practice groups

Group (as registered with Medicare)GastroenterologistsAll clinicians in groupMain city
Portland Gastroenterology Associates PA1422Portland
Mainehealth122,616Portland
Mercy Hospital7307Portland
Mainegeneral Medical Center6554Augusta
St Joseph Hospital6197Bangor

Hospitals where they hold privileges

HospitalCityOwnershipCMS star ratingGastroenterologists affiliated
Mainehealth Maine Medical CenterPortlandNonprofit4 of 526
Mainehealth Mid Coast HospitalBrunswickNonprofit3 of 512
Northern Light Mercy HospitalPortlandNonprofit4 of 58
Maine General Medical CenterAugustaNonprofit4 of 58
St Joseph HospitalBangorNonprofit3 of 56

Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.

Gastroenterology providers in Maine

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. Brian Baggott, M.D.
Augusta, ME · $135 in drug and device payments (2025) · Telehealth · (207) 621-1150
Dr. George Davis, MD
Augusta, ME · No drug or device payments recorded (2025) · (207) 624-4657
Dr. Joan Kheder, M.D.
Augusta, ME · $367 in drug and device payments (2025) · (207) 621-1150
Dr. Thomas Gay, MD
Augusta, ME · No drug or device payments recorded (2025) · (207) 623-8411
Dr. Brian Berberian, M.D.
Bangor, ME · $16,838 in drug and device payments (2025) · Telehealth · (207) 907-3550
Dr. Daniel Cassidy, MD
Bangor, ME · No drug or device payments recorded (2025) · (207) 973-7000
Dr. Hatem Shoukeir, M.D.
Bangor, ME · $184 in drug and device payments (2025) · Telehealth · (207) 907-3550
Dr. Janese Laster, M.D.
Bangor, ME · $21,632 in drug and device payments (2025) · (207) 973-4266
Dr. Jean Larson, MD
Bangor, ME · No drug or device payments recorded (2025) · Telehealth · (207) 973-4266
Dr. Joseph Gallagher, MD
Bangor, ME · $6 in drug and device payments (2025) · (207) 907-3550
Dr. Mark Lena, MD
Bangor, ME · $72 in drug and device payments (2025) · (207) 907-3550
Dr. Michael Sighinolfi, M.D.
Bangor, ME · No drug or device payments recorded (2025) · (207) 907-3550
Dr. Mira Olson, M.D.
Bangor, ME · No drug or device payments recorded (2025) · Telehealth · (207) 907-3550
Dr. Pearl Princess Uy, M.D.
Bangor, ME · $150 in drug and device payments (2025) · Telehealth · (207) 973-4266
Dr. Philip Hunter, M.D.
Bangor, ME · No drug or device payments recorded (2025) · (207) 947-4466
Dr. Phillip Amidon, MD
Bangor, ME · No drug or device payments recorded (2025) · (207) 973-4266
Dr. Stephen Eskin, M.D.
Bangor, ME · No drug or device payments recorded (2025) · (207) 907-3550
Dr. Tahira Saifuddin, MD
Bangor, ME · $881 in drug and device payments (2025) · (207) 907-3550
Dr. Theodore James, M.D.
Bangor, ME · $157 in drug and device payments (2025) · Telehealth · (207) 973-4266
Dr. Duncan Flynn, MD
Biddeford, ME · No drug or device payments recorded (2025) · Telehealth · (207) 283-1427
Dr. Gustavo Churrango, MD
Biddeford, ME · $27,621 in drug and device payments (2025) · (207) 283-1427
Dr. Igor Prokopiw, M.D.
Biddeford, ME · No drug or device payments recorded (2025) · (207) 283-1427
Dr. Kellen Hipp, D.O
Biddeford, ME · No drug or device payments recorded (2025) · (207) 283-1427
Dr. William Vandeinse, M.D.
Biddeford, ME · No drug or device payments recorded (2025) · (207) 283-1427
Dr. Winoah Henry, MD
Biddeford, ME · $11,113 in drug and device payments (2025) · (207) 283-1427
Dr. Stuart Eisenberg, MD
Bridgton, ME · No drug or device payments recorded (2025) · (207) 647-6240
Dr. Aloysius Rho, MD
Brunswick, ME · No drug or device payments recorded (2025) · (207) 406-7300
Dr. Calin Stoicov, MD
Brunswick, ME · $594 in drug and device payments (2025) · (207) 406-7300
Dr. Gary Zartarian, MD
Brunswick, ME · No drug or device payments recorded (2025) · (508) 548-8989
Dr. Miguel Arguedas - Brollo, MD
Brunswick, ME · $420 in drug and device payments (2025) · Telehealth · (207) 406-7300
Dr. Richard Beveridge, M.D.
Brunswick, ME · No drug or device payments recorded (2025) · (207) 406-7300
Dr. Kelly Finlay
Hope, ME · No drug or device payments recorded (2025) · (207) 691-3391
Dr. John Thompson, D.O.
Kennebunk, ME · No drug or device payments recorded (2025) · (207) 985-7174
Dr. Benjamin Stein, M.D.,
Lewiston, ME · $880 in drug and device payments (2025) · (207) 784-5784
Dr. Catherine Mccrann, MD
Lewiston, ME · No drug or device payments recorded (2025) · (207) 784-5784
Dr. Emil Miskovsky, MD
Lewiston, ME · $20 in drug and device payments (2025) · (207) 755-3636
Dr. John Lewandowski, MD
Lewiston, ME · $72 in drug and device payments (2025) · (207) 784-5784
Dr. John Mladucky, PA-C
Lewiston, ME · $1,038 in drug and device payments (2025) · (207) 795-0111
Dr. Jordan Goldstein, MD
Lewiston, ME · $2,510 in drug and device payments (2025) · Telehealth · (207) 795-0111
Dr. Mark Branda, MD
Lewiston, ME · No drug or device payments recorded (2025) · (207) 784-5784
Dr. Mark Sterling, M.D.
Lewiston, ME · $330 in drug and device payments (2025) · (207) 795-0111
Dr. Michael Sivulich, MD
Lewiston, ME · No drug or device payments recorded (2025) · (207) 755-3636
Dr. Oswaldo Bisbal, MD
Lewiston, ME · $196 in drug and device payments (2025) · (207) 784-5784
Dr. Donald Calebaugh, MD
Pleasant Point, ME · No drug or device payments recorded (2025) · (207) 853-0644
Dr. Adam Winters, MD
Portland, ME · No drug or device payments recorded (2025) · Telehealth · (207) 661-4400
Dr. Alan Kilby, MD
Portland, ME · No drug or device payments recorded (2025) · (207) 773-7964
Dr. Andreas Stefan, M.D.
Portland, ME · $787 in drug and device payments (2025) · Telehealth · (207) 773-7964
Dr. Andrew Hsu, M.D.
Portland, ME · $751 in drug and device payments (2025) · (207) 535-1100
Dr. Benjamin Potter, MD
Portland, ME · $80 in drug and device payments (2025) · (207) 773-7964
Dr. Collin York
Portland, ME · No drug or device payments recorded (2025) · (207) 773-7964

Conditions Gastroenterology providers in Maine 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 Maine?

There are 85 Gastroenterology providers with active NPI records practicing in Maine, according to federal NPPES data refreshed monthly.

Do Gastroenterology providers in Maine offer telehealth?

Yes. 16 of the 85 Gastroenterology providers in Maine (about 19%) report offering telehealth services in CMS data.

Which cities in Maine have the most Gastroenterology providers?

Portland (28), Bangor (15), Lewiston (10) have the highest concentration of Gastroenterology providers in Maine.

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

44 of 85 Gastroenterology providers in Maine (52%) 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 Maine 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 Maine work in independent practices or large health systems?

Among 48 Gastroenterologists in Maine enrolled in Medicare, 2% bill through a solo or small practice with fewer than 10 clinicians, 31% through a mid-size group of 10 to 99, and 67% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Gastroenterologists in Maine work at?

According to CMS facility affiliation records, the Maine hospitals where the most Gastroenterologists hold privileges are Mainehealth Maine Medical Center in Portland; Mainehealth Mid Coast Hospital in Brunswick; Northern Light Mercy Hospital in Portland.

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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 Maine? Get featured.