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Gastroenterology in Ann Arbor, Michigan

Data updated monthly · Last refresh September 2026

95 Gastroenterology providers practice in Ann Arbor, and 41% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Gastroenterology providers in Ann Arbor

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. Joy Chang, M.D.
Ann Arbor, MI · $7,428 in drug and device payments (2025) · Telehealth · (734) 647-5944
Dr. Juanita Merchant, MD, PHD
Ann Arbor, MI · $222 in drug and device payments (2025) · (734) 936-9250
Dr. Juhee Kim, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Kira Newman, M.D.
Ann Arbor, MI · $3,105 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. Laurence Mcmahon, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · (734) 936-4000
Dr. Lavana Greene-higgs, MD
Ann Arbor, MI · $125 in drug and device payments (2025) · (734) 845-5290
Dr. Lawrence Leung, MD
Ann Arbor, MI · $1,684 in drug and device payments (2025) · (734) 936-4000
Dr. Leslie Aldrich, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · (734) 936-4000
Dr. Marc Cantwell, MD, PHD
Ann Arbor, MI · $113 in drug and device payments (2025) · (734) 936-5000
Dr. Mary Mortell, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Mary Takami, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Matthew Sturm, M.D., PHD
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 647-5944
Dr. Megan Adams, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · (734) 936-4000
Dr. Michael Rice, MD
Ann Arbor, MI · $500 in drug and device payments (2025) · Telehealth · (734) 647-5944
Dr. Michelle Muza-moons, M.D.
Ann Arbor, MI · $155,072 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. Molly Stone, MD
Ann Arbor, MI · $188 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. Nataliya Razumilava, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 647-5944
Dr. Neehar Parikh, M.D.
Ann Arbor, MI · $7,503 in drug and device payments (2025) · Telehealth · (734) 647-5944
Dr. Neil Sheth, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Ngoc-duyen Dang, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 647-5944
Dr. Peter Higgins, MD, PHD
Ann Arbor, MI · $17,014 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. Phillip Schoenfeld, MD
Ann Arbor, MI · $200,421 in drug and device payments (2025) · (734) 647-5944
Dr. Ponni Perumalswami, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Prashant Singh, MBBS
Ann Arbor, MI · $2,096 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. Pratima Sharma, MBBS
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Rafat Rizk, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · (734) 647-5944
Dr. Rebecca Vandyke, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · (734) 647-5944
Dr. Richard Kwon, MD
Ann Arbor, MI · $386 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. Richard Saad, MD
Ann Arbor, MI · $396 in drug and device payments (2025) · Telehealth · (734) 647-5944
Dr. Robert Fontana, MD
Ann Arbor, MI · $6,922 in drug and device payments (2025) · Telehealth · (734) 647-5944
Dr. Ryan Fauble, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · (734) 936-4000
Dr. Samara Rifkin, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Sameer Saini, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · (734) 936-4000
Dr. Shanti Eswaran, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Shirley Cohen-mekelburg, MD
Ann Arbor, MI · $79 in drug and device payments (2025) · (734) 647-5944
Dr. Shrinivas Bishu, M.D.
Ann Arbor, MI · $20,502 in drug and device payments (2025) · Telehealth · (734) 647-5944
Dr. Sonja Dawsey, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Stacy Menees, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · (749) 936-4000
Dr. Thomas Wang, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. Trey Rottgen, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · (734) 936-5000
Dr. Vincent Chen, M.D.
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 936-4000
Dr. William Chey, MD
Ann Arbor, MI · $2,984 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. William Hasler, MD
Ann Arbor, MI · $1,461 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. Winnie Zou, MD
Ann Arbor, MI · $256 in drug and device payments (2025) · Telehealth · (734) 936-4000
Dr. Zachary Junga, MD
Ann Arbor, MI · No drug or device payments recorded (2025) · Telehealth · (734) 647-5299

Conditions Gastroenterology providers in Ann Arbor, Michigan 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 Ann Arbor, Michigan?

There are 95 Gastroenterology providers with active NPI records practicing in Ann Arbor, according to federal NPPES data refreshed monthly.

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

39 of 95 (41%) 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 Ann Arbor treat?

Gastroenterology providers in Ann Arbor 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 Ann Arbor Gastroenterology across Michigan

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.