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 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. Thienluong Domi Le, MDPortland, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 963-2707 Dr. Tien Dong, M.D., PH.D.Portland, OR · $29,230 in drug and device payments (2025) ·
(800) 813-2000 Dr. Tiffany Lambrou, M.D.Portland, OR · No drug or device payments recorded (2025) · Telehealth ·
(503) 963-2707 Dr. Ting Zheng, MDPortland, OR · $262 in drug and device payments (2025) · Telehealth ·
(503) 297-8081 Dr. Vicki Tang, MDPortland, OR · No drug or device payments recorded (2025) ·
(503) 494-8927 Dr. Victor Fishman, MDPortland, OR · No drug or device payments recorded (2025) ·
(503) 255-3054 Dr. Viju Deenadayalu, MDPortland, OR · $49 in drug and device payments (2025) · Telehealth ·
(503) 963-2707 Dr. Wayne Wong, M.D.Portland, OR · No drug or device payments recorded (2025) ·
(503) 331-6170 Dr. William Kelley, M.D.Portland, OR · $129 in drug and device payments (2025) ·
(541) 915-6007 Dr. Willscott Naugler, M.D.Portland, OR · $691 in drug and device payments (2025) · Telehealth ·
(503) 494-7137 Dr. Young Choi, M.D.Portland, OR · $279 in drug and device payments (2025) ·
(503) 221-0161 Dr. David Glaser, MDRoseburg, OR · No drug or device payments recorded (2025) ·
(541) 677-4488 Dr. Dempsie Morrison, D.O.Roseburg, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 464-6260 Dr. Gerald Engstrom, MDRoseburg, OR · No drug or device payments recorded (2025) ·
(541) 464-6260 Dr. Joseph Black, M DRoseburg, OR · No drug or device payments recorded (2025) ·
(541) 580-5328 Dr. Lisa Brandenburger, MDRoseburg, OR · No drug or device payments recorded (2025) ·
(541) 673-2223 Dr. Rodolfo Lorenzo, M.D.Roseburg, OR · No drug or device payments recorded (2025) ·
(541) 440-1000 Dr. Sorin Petre, M.D.Roseburg, OR · No drug or device payments recorded (2025) ·
(541) 464-6260 Dr. Vikas Garg, MDRoseburg, OR · No drug or device payments recorded (2025) ·
(541) 464-6260 Dr. Charles Du, MDSalem, OR · No drug or device payments recorded (2025) ·
(503) 399-7520 Dr. Christian Speer, M.D.Salem, OR · No drug or device payments recorded (2025) ·
(503) 763-3676 Dr. Edward Schultheiss, MDSalem, OR · No drug or device payments recorded (2025) ·
(503) 559-7763 Dr. Falguny Bhavan, MDSalem, OR · No drug or device payments recorded (2025) ·
(503) 399-7520 Dr. Gregory Potter, M.D.Salem, OR · No drug or device payments recorded (2025) ·
(503) 361-5400 Dr. Hans West, M.D.Salem, OR · No drug or device payments recorded (2025) ·
(503) 399-2424 Dr. Howard Baumann, M.D.Salem, OR · No drug or device payments recorded (2025) ·
(503) 399-2424 Dr. Joseph Glaser, MDSalem, OR · No drug or device payments recorded (2025) ·
(503) 361-5400 Dr. Makkalearn Em, MDSalem, OR · No drug or device payments recorded (2025) ·
(503) 399-7520 Dr. Michael Buck, MDSalem, OR · No drug or device payments recorded (2025) ·
(503) 399-7520 Dr. Patricia Kao, MDSalem, OR · No drug or device payments recorded (2025) ·
(503) 399-7520 Dr. Srinivasan Subramanian, M.D.Salem, OR · No drug or device payments recorded (2025) ·
(800) 813-2000 Dr. Abhinav Tiwari, MDSpringfield, OR · $152 in drug and device payments (2025) · Telehealth ·
(541) 222-6200 Dr. Christianne Kratka, MDSpringfield, OR · No drug or device payments recorded (2025) ·
(541) 868-9500 Dr. Craig Chamberlain, MDSpringfield, OR · No drug or device payments recorded (2025) ·
(541) 868-9500 Dr. Daniel Phillips, MDSpringfield, OR · No drug or device payments recorded (2025) ·
(541) 868-9500 Dr. Davis Sim, MD PHDSpringfield, OR · $14 in drug and device payments (2025) · Telehealth ·
(541) 868-9506 Dr. Donald Yang, MDSpringfield, OR · $307 in drug and device payments (2025) · Telehealth ·
(541) 868-9500 Dr. Erica Donnan, MDSpringfield, OR · $32 in drug and device payments (2025) · Telehealth ·
(541) 868-9500 Dr. Gregory Knecht, MDSpringfield, OR · No drug or device payments recorded (2025) ·
(541) 868-9500 Dr. Harry Park, MDSpringfield, OR · $2,431 in drug and device payments (2025) ·
(541) 228-3330 Dr. Jonathan Gonenne, MDSpringfield, OR · $178 in drug and device payments (2025) · Telehealth ·
(541) 868-9500 Dr. Jubeen Moaven, MDSpringfield, OR · $79 in drug and device payments (2025) · Telehealth ·
(541) 868-9500 Dr. Khola Qamar, M.D.Springfield, OR · $817 in drug and device payments (2025) ·
(541) 345-2205 Dr. M. Mirhej, M.D.Springfield, OR · No drug or device payments recorded (2025) ·
(541) 222-6200 Dr. Nathan Holman, MDSpringfield, OR · No drug or device payments recorded (2025) · Telehealth ·
(541) 868-9500 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.
- Acid reflux
- IBS
- Crohn disease
- Ulcerative colitis
- Celiac disease
- Colon cancer screening
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.
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