NPPES file of Aug 9, 2026

Gastroenterology Physician in Oregon

281 NPPES records list gastroenterology physician with a practice address in Oregon, 6.6 per 100,000 residents, the 15th highest rate of 51. Portland and Springfield have the most; each record links to the provider's NPI and the Oregon license search. Page 6 of 6.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RG0100X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Portland has the most, 135

  1. Portland135
  2. Springfield21
  3. Salem19
  4. Tualatin18
  5. Bend14

Gastroenterology Physician records in Oregon

  1. Surinder Vasdev, MDCorvallis, OR 973301093893554
  2. Stephen Vindigni, MD, MPHPortland, OR 972251548559552
  3. Erich Vorlop, M.D.Portland, OR 972101831315829
  4. Ross Vyhmeister, M.D.Portland, OR 972251912357187
  5. Courtney Walker, DOBend, OR 977011154684504
  6. John Walker, MDBend, OR 977011346210994
  7. Douglas Walta, MDPortland, OR 972201023001195
  8. Matthew Walton, M.D.Corvallis, OR 973301952497737
  9. Amy Wang, MDPortland, OR 972251841364783
  10. Anne Wang, MDPortland, OR 972201922091099
  11. Wei Wang, MDTualatin, OR 970621639280266
  12. Randy Watson, M.D.Hillsboro, OR 971231295737005
  13. Matthew WeedBend, OR 977011275726598
  14. Jeffrey Weprin, MDPortland, OR 972251205872884
  15. Hans West, M.D.Salem, OR 973031922046663
  16. Robert Wilechansky, M.D.Portland, OR 972391750743886
  17. Diane Williams, DOPortland, OR 972251619973351
  18. Gregory Winters, MDMedford, OR 975041891761037
  19. Robert Wohlman, MDHermiston, OR 978381265412019
  20. Wayne Wong, M.D.Portland, OR 972271275676843
  21. Zibing Woodward, M.D.Oregon City, OR 970451164665758
  22. William Wu, MDSpringfield, OR 974771992724819
  23. Manida Wungjiranirun, M.D.Portland, OR 972391376982421
  24. Donald Yang, MDSpringfield, OR 974771023037306
  25. Frank Yeh, MDClackamas, OR 970151710102959
  26. Jennifer Yeh, MDPortland, OR 972201467875385
  27. Kellie YoungPortland, OR 972101073908588
  28. Jessica Yu, MDPortland, OR 972391659664589
  29. Atif Zaman, MDPortland, OR 972391003821513
  30. Ting Zheng, MDPortland, OR 972251194254383
  31. Amy Zhu, MDPortland, OR 972201033379862

Source: CMS NPPES, primary taxonomy 207RG0100X: records by practice city and the list of records, file of Aug 9, 2026.

Oregon ranks 15 of 51 per resident

  1. Washington6.8
  2. Florida6.7
  3. Missouri6.7
  4. Oregon6.6
  5. Ohio6.3
  6. North Carolina6.3
  7. 50 states and D.C.6.2

Source: CMS NPPES, primary taxonomy 207RG0100X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

78.6% of these records appear in a Medicare file, against 84.4% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Oregon78.6%
  2. United States84.4%

Gastroenterology Physician records in Oregon, measured

  • In a Medicare file221 of 281 · 78.6% here, 84.4% nationally
  • In the CMS Doctors and Clinicians file201 · 71.5% here, 73.7% nationally
  • Not updated in five years or more127 · 45.2% here, 55.6% nationally
  • Median graduation year2003 · the 201 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RG0100X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

281 NPPES records list gastroenterology physician (207RG0100X) as their primary taxonomy with a practice address in Oregon: 6.6 per 100,000 residents against 6.2 nationally (50 states and D.C.). Portland has 135 of them (48%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Louisiana263
  2. South Carolina303
  3. Alabama232
  4. Colorado334

States with a similar rate per 100,000

  1. Missouri6.7
  2. Florida6.7
  3. Washington6.8
  4. Puerto Rico6.3

The largest states

  1. California2,140
  2. New York1,797
  3. Florida1,513
  4. Texas1,478
  5. Pennsylvania1,049

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.