Gastroenterologists in Washington
Data updated monthly · Last refresh October 2026
536 Gastroenterology providers practice in Washington, including 222 (41%) offering telehealth. The largest concentration is in Seattle. 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.
536providers
222telehealth
Seattletop city
Gastroenterology by city in Washington
Choose a city to see providers there.
Where Gastroenterologists in Washington practice
From CMS Medicare enrollment records covering 346 of the 536 providers listed here (65%). Providers who do not bill Medicare are not included in these figures.
4%solo or small practice (under 10 clinicians)
16%mid-size group (10 to 99)
80%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Gastroenterologists | All clinicians in group | Main city |
| Washington Gastroenterology PLLC | 42 | 142 | Bellevue |
| The Association of University Physicians | 40 | 3,484 | Seattle |
| Puget Sound Gastroenterology PLLC | 31 | 59 | Kirkland |
| Franciscan Medical Group | 26 | 1,400 | Tacoma |
| Swedish Health Services | 26 | 1,038 | Seattle |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Gastroenterologists affiliated |
| University of Washington Medical Ctr | Seattle | Government | 4 of 5 | 38 |
| Tacoma General Allenmore Hospital | Tacoma | Nonprofit | 2 of 5 | 34 |
| Swedish Medical Center | Seattle | Nonprofit | 4 of 5 | 29 |
| St Joseph Medical Center | Tacoma | Nonprofit | 3 of 5 | 29 |
| Swedish Edmonds Hospital | Edmonds | Nonprofit | 3 of 5 | 25 |
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 Washington
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. Donald Wakelin, MDAnacortes, WA · No drug or device payments recorded (2025) ·
(360) 299-5142 Dr. Steven Kaptik, MDAuburn, WA · $3,280 in drug and device payments (2025) ·
(253) 272-5127 Dr. Kenneth Klein, MDBainbridge Island, WA · No drug or device payments recorded (2025) ·
(360) 111-1111 Dr. Annie Hong, M.D.Bellevue, WA · $1,811 in drug and device payments (2025) · Telehealth ·
(425) 454-4768 Dr. Daniel Hwang, M.D.Bellevue, WA · No drug or device payments recorded (2025) ·
(425) 502-3000 Dr. Edwin Lai, M.D.Bellevue, WA · $2,165 in drug and device payments (2025) · Telehealth ·
(425) 454-4768 Dr. Eric Yap, MDBellevue, WA · $2,359 in drug and device payments (2025) · Telehealth ·
(425) 467-0150 Dr. Gaurav Aggarwal, M.D.Bellevue, WA · No drug or device payments recorded (2025)
Dr. Georgia Rees-lui, M.D.Bellevue, WA · $104 in drug and device payments (2025) ·
(425) 467-0150 Dr. John Meisel, MDBellevue, WA · No drug or device payments recorded (2025) ·
(425) 883-6950 Dr. Kalle Kang, M.D.Bellevue, WA · $458 in drug and device payments (2025) · Telehealth ·
(425) 454-4768 Dr. Katya Swarts, MDBellevue, WA · No drug or device payments recorded (2025) ·
(425) 502-3000 Dr. Lauren Feld, M.D.Bellevue, WA · No drug or device payments recorded (2025) ·
(425) 454-4768 Dr. Pallavi PatelBellevue, WA · No drug or device payments recorded (2025) ·
(425) 502-3000 Dr. Raj Butani, M.D.Bellevue, WA · $925 in drug and device payments (2025) · Telehealth ·
(425) 467-0150 Dr. Raymond Hsia, M.D.Bellevue, WA · No drug or device payments recorded (2025) ·
(425) 502-3000 Dr. Roanne Selinger, MDBellevue, WA · $22 in drug and device payments (2025) · Telehealth ·
(425) 454-4768 Dr. Robert Gannan, MD PHDBellevue, WA · No drug or device payments recorded (2025) ·
(425) 454-4768 Dr. Sang Kim, M.D.Bellevue, WA · $943 in drug and device payments (2025) · Telehealth ·
(425) 467-0150 Dr. Shie-pon Tzung, MD PHDBellevue, WA · No drug or device payments recorded (2025) ·
(425) 454-4768 Dr. Vaew Wongsurawat, M.D.Bellevue, WA · No drug or device payments recorded (2025) ·
(425) 502-3000 Dr. Venkatachala Mohan, MDBellevue, WA · $68,404 in drug and device payments (2025) · Telehealth ·
(425) 454-4768 Dr. Alan Chang, M.D.Bellingham, WA · No drug or device payments recorded (2025) ·
(360) 543-5054 Dr. Alison Freeman, MDBellingham, WA · $18 in drug and device payments (2025) · Telehealth ·
(360) 734-1420 Dr. Benjamin Siemanowski, M.D.Bellingham, WA · No drug or device payments recorded (2025) · Telehealth ·
(360) 734-1420 Dr. Brandon Kuiper, MDBellingham, WA · $221 in drug and device payments (2025) · Telehealth ·
(360) 752-5216 Dr. Christoph Reitz, M.D.Bellingham, WA · No drug or device payments recorded (2025) ·
(360) 303-2569 Dr. Dana Stiner, M.D.Bellingham, WA · No drug or device payments recorded (2025) ·
(360) 738-2200 Dr. Donald Gullickson, M.D.Bellingham, WA · No drug or device payments recorded (2025) · Telehealth ·
(360) 734-1420 Dr. Gregory Munson, M.D.Bellingham, WA · No drug or device payments recorded (2025) · Telehealth ·
(360) 734-1420 Dr. Hannah Sheinin, MDBellingham, WA · No drug or device payments recorded (2025) ·
(360) 734-1420 Dr. James Schoenecker, MDBellingham, WA · $181 in drug and device payments (2025) ·
(360) 752-5216 Dr. Jash Bansal, M.D.Bellingham, WA · No drug or device payments recorded (2025) · Telehealth ·
(360) 543-5054 Dr. Joseph Gabriel Gabriel, M.D.Bellingham, WA · $35 in drug and device payments (2025) · Telehealth ·
(360) 752-5216 Dr. Kelly Mccullough, M.D.Bellingham, WA · No drug or device payments recorded (2025) · Telehealth ·
(360) 734-1420 Dr. Kristina Ross, MDBellingham, WA · No drug or device payments recorded (2025) · Telehealth ·
(360) 734-1420 Dr. Natasha Muckova, M.D.Bellingham, WA · $56 in drug and device payments (2025) ·
(360) 738-2200 Dr. Rinad Tabbalat, MDBellingham, WA · No drug or device payments recorded (2025) · Telehealth ·
(360) 734-1420 Dr. Stephen Woods, M.D.Bellingham, WA · No drug or device payments recorded (2025) ·
(360) 734-1420 Dr. Todd Witte, M.D.Bellingham, WA · No drug or device payments recorded (2025) · Telehealth ·
(360) 734-1420 Dr. Wen-huan Ho, MDBellingham, WA · $2,206 in drug and device payments (2025) · Telehealth ·
(360) 738-2200 Dr. Christopher Duncan, M.D.Burien, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 431-9771 Dr. Daniel Bushyhead, MDBurien, WA · $62 in drug and device payments (2025) · Telehealth ·
(206) 431-9771 Dr. Peter Hartwell, M.D.Burien, WA · No drug or device payments recorded (2025) ·
(206) 431-9771 Dr. Pierre Nader, MDBurien, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 243-4940 Dr. Richard Stein, M.D.Burien, WA · No drug or device payments recorded (2025) ·
(206) 431-9771 Dr. Samantha Chung, M.D.Burien, WA · No drug or device payments recorded (2025) · Telehealth ·
(206) 431-9771 Dr. Murray Larsen, MDClarkston, WA · $51 in drug and device payments (2025) ·
(509) 758-2200 Dr. Mark Mendez Vigo, MDColville, WA · No drug or device payments recorded (2025) ·
(509) 684-3701 Dr. Calvin Kiani, MDEdmonds, WA · $414 in drug and device payments (2025) · Telehealth ·
(206) 215-4250 Conditions Gastroenterology providers in Washington 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 Washington?There are 536 Gastroenterology providers with active NPI records practicing in Washington, according to federal NPPES data refreshed monthly.
Do Gastroenterology providers in Washington offer telehealth?Yes. 222 of the 536 Gastroenterology providers in Washington (about 41%) report offering telehealth services in CMS data.
Which cities in Washington have the most Gastroenterology providers?Seattle (163), Tacoma (46), Spokane (37) have the highest concentration of Gastroenterology providers in Washington.
How many Gastroenterology providers in Washington received drug or device company payments?234 of 536 Gastroenterology providers in Washington (44%) 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 Washington 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 Washington work in independent practices or large health systems?Among 346 Gastroenterologists in Washington enrolled in Medicare, 4% bill through a solo or small practice with fewer than 10 clinicians, 16% through a mid-size group of 10 to 99, and 80% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Gastroenterologists in Washington work at?According to CMS facility affiliation records, the Washington hospitals where the most Gastroenterologists hold privileges are University of Washington Medical Ctr in Seattle; Tacoma General Allenmore Hospital in Tacoma; Swedish Medical Center in Seattle.
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