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Gastroenterologists in Oregon

Data updated monthly · Last refresh October 2026

277 Gastroenterology providers practice in Oregon, including 123 (44%) 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.

277providers
123telehealth
Portlandtop city

Gastroenterology by city in Oregon

Choose a city to see providers there.

Gastroenterology in Portland135 providers
Gastroenterology in Springfield21 providers
Gastroenterology in Tualatin18 providers
Gastroenterology in Salem17 providers
Gastroenterology in Clackamas14 providers
Gastroenterology in Bend14 providers
Gastroenterology in Oregon City10 providers
Gastroenterology in Medford9 providers
Gastroenterology in Hillsboro8 providers
Gastroenterology in Roseburg8 providers
Gastroenterology in Corvallis7 providers
Gastroenterology in Tigard2 providers
Gastroenterology in Milwaukie2 providers
Gastroenterology in Eugene2 providers
Gastroenterology in Hermiston2 providers
Gastroenterology in Gresham2 providers
Gastroenterology in Mcminnville1 providers
Gastroenterology in Albany1 providers
Gastroenterology in Newport1 providers
Gastroenterology in Ashland1 providers
Gastroenterology in Newberg1 providers
Gastroenterology in Lebanon1 providers

Gastroenterology providers in Oregon

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. Kenneth Flora, MD
Portland, OR · $25 in drug and device payments (2025) · (503) 963-2707
Dr. Kent Benner, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 963-2707
Dr. Kevin Jones, D.O.
Portland, OR · No drug or device payments recorded (2025) · (503) 331-6170
Dr. Kirsten Kinsman, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 963-2707
Dr. Larry Heinonen, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 297-8081
Dr. Laura Pestana, DO
Portland, OR · No drug or device payments recorded (2025) · (503) 255-3054
Dr. Lehel Somogyi, MD, PHD
Portland, OR · $431 in drug and device payments (2025) · Telehealth · (503) 963-2707
Dr. Manida Wungjiranirun, M.D.
Portland, OR · $204 in drug and device payments (2025) · Telehealth · (503) 494-4373
Dr. Manisha Apte, M.D.
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 297-8081
Dr. Margot Herman, MD
Portland, OR · $125 in drug and device payments (2025) · Telehealth · (503) 297-8081
Dr. Mark Sofia, M.D.
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 494-2270
Dr. Matthew Smith, MD
Portland, OR · $65 in drug and device payments (2025) · Telehealth · (503) 229-7137
Dr. Meghan Nesmith, M.D.
Portland, OR · $66 in drug and device payments (2025) · Telehealth · (503) 494-8211
Dr. Melissa Hershman, M.D.
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 494-4373
Dr. Michael (brian) Fennerty, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 494-8577
Dr. Michael Chew, MD, MS
Portland, OR · $109 in drug and device payments (2025) · Telehealth · (503) 297-8081
Dr. Michael Phillips, MD
Portland, OR · $161 in drug and device payments (2025) · Telehealth · (503) 963-2707
Dr. Milton Johnson, M.D.
Portland, OR · No drug or device payments recorded (2025) · (503) 255-3054
Dr. Mohamed Osman, MD
Portland, OR · $1,874 in drug and device payments (2025) · (503) 494-4373
Dr. Molly Thomas, MD, PHD
Portland, OR · $136 in drug and device payments (2025) · Telehealth · (503) 494-4373
Dr. Muaz Aijazi, M.D.
Portland, OR · $1,986 in drug and device payments (2025) · (503) 963-2707
Dr. Myles Nelligan
Portland, OR · No drug or device payments recorded (2025) · (503) 963-2707
Dr. Myron Lezak, MD
Portland, OR · $16 in drug and device payments (2025) · (503) 452-0915
Dr. Nancy Ho, M.D.
Portland, OR · $377 in drug and device payments (2025) · Telehealth · (503) 220-8262
Dr. Nir Modiano, MD, PHD
Portland, OR · No drug or device payments recorded (2025) · (503) 494-4373
Dr. Patrick Stauffer, MD
Portland, OR · $125 in drug and device payments (2025) · (503) 963-2707
Dr. Philip Dolan, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 221-0161
Dr. Phillip Kiyasu, MD
Portland, OR · $181 in drug and device payments (2025) · (503) 963-2707
Dr. Ranjan Mascarenhas, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 220-8262
Dr. Rebecca Fausel, M.D.
Portland, OR · $148 in drug and device payments (2025) · Telehealth · (503) 963-2707
Dr. Rebecca Matro, M.D.
Portland, OR · $47,060 in drug and device payments (2025) · Telehealth · (503) 494-2270
Dr. Richard Brandes, MD
Portland, OR · $79 in drug and device payments (2025) · (503) 255-3054
Dr. Robert Shneidman, M.D.
Portland, OR · No drug or device payments recorded (2025) · (503) 331-6170
Dr. Robert Wilechansky, M.D.
Portland, OR · $121 in drug and device payments (2025) · Telehealth · (503) 494-4373
Dr. Rodger Sleven, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 297-8081
Dr. Ronald Katon, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 494-8577
Dr. Ross Vyhmeister, M.D.
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 297-8081
Dr. Saad Jazrawi, MD
Portland, OR · $613 in drug and device payments (2025) · Telehealth · (503) 494-4373
Dr. Sarah Diamond, MD
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 494-8311
Dr. Sarah Rodriguez, MD
Portland, OR · $157 in drug and device payments (2025) · Telehealth · (503) 297-8081
Dr. Sergio Crespo, M.D.
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 297-8081
Dr. Seth Crockett, MD, MPH
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 494-4373
Dr. Shannon Lewis, MD
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 297-8018
Dr. Siddharth Javia, M.D.
Portland, OR · $1,412 in drug and device payments (2025) · Telehealth · (503) 494-4373
Dr. Sidharth Bhardwaj, M.D.
Portland, OR · $56 in drug and device payments (2025) · Telehealth · (503) 963-2707
Dr. Silvio De Melo, MD
Portland, OR · No drug or device payments recorded (2025) · (503) 494-8577
Dr. Stephen Vindigni, MD, MPH
Portland, OR · $115 in drug and device payments (2025) · Telehealth · (503) 297-8081
Dr. Susan Johnson, M.D.
Portland, OR · $125 in drug and device payments (2025) · Telehealth · (503) 297-8081
Dr. Tan Attila, M.D.
Portland, OR · No drug or device payments recorded (2025) · (503) 494-8417
Dr. Taylor Karl, MD
Portland, OR · No drug or device payments recorded (2025) · Telehealth · (503) 494-4373

Conditions Gastroenterology providers in Oregon 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 Oregon?

There are 277 Gastroenterology providers with active NPI records practicing in Oregon, according to federal NPPES data refreshed monthly.

Do Gastroenterology providers in Oregon offer telehealth?

Yes. 123 of the 277 Gastroenterology providers in Oregon (about 44%) report offering telehealth services in CMS data.

Which cities in Oregon have the most Gastroenterology providers?

Portland (135), Springfield (21), Tualatin (18) have the highest concentration of Gastroenterology providers in Oregon.

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

125 of 277 Gastroenterology providers in Oregon (45%) 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 Oregon 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 Oregon work in independent practices or large health systems?

Among 175 Gastroenterologists in Oregon enrolled in Medicare, 3% bill through a solo or small practice with fewer than 10 clinicians, 18% through a mid-size group of 10 to 99, and 79% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Gastroenterologists in Oregon work at?

According to CMS facility affiliation records, the Oregon hospitals where the most Gastroenterologists hold privileges are Ohsu Hospital and Clinics in Portland; Providence Portland Medical Center in Portland; Providence St Vincent Medical Center in Portland.

Related reading on HealthcareDiscovery.AI

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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 Oregon? Get featured.