NPPES file of Aug 9, 2026

Medical Oncology Physician in Washington

183 NPPES records list medical oncology physician with a practice address in Washington, 2.3 per 100,000 residents, the 11th highest rate of 51. Seattle and Spokane have the most; each record links to the provider's NPI and the Washington license search. Page 4 of 4.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RX0202X · method

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

Seattle has the most, 94

  1. Seattle94
  2. Spokane9
  3. Tacoma9
  4. Sequim7
  5. Bellingham5

Medical Oncology Physician records in Washington

  1. Jennifer SpechtSeattle, WA 981091053491027
  2. Verneeda Spencer, MDSeattle, WA 981091124054655
  3. Howard Stang, M.D.Spokane, WA 992181710977764
  4. Derek Stirewalt, MDSeattle, WA 981091093805947
  5. Hugh Straley, M.D.Seattle, WA 981211538284955
  6. Somasundaram Subramaniam, MDSeattle, WA 981041972766111
  7. Jason Suh, MDPort Townsend, WA 983681225024722
  8. Xingwei Sui, MDLacey, WA 985031568469534
  9. Lavanya Sundararajan, MDTacoma, WA 984051568553097
  10. Jason Taylor, MD, PHDSeattle, WA 981011518177864
  11. Muneesh Tewari, MD, PHDSeattle, WA 981091831369164
  12. John Thompson, M.D.Seattle, WA 981091447328539
  13. Brian Till, MDSeattle, WA 981951902917974
  14. Diane Tseng, MD,PHDSeattle, WA 981091164862785
  15. Soe Min Tun, MDTacoma, WA 984051801279799
  16. Scott TykodiSeattle, WA 981951114002938
  17. Jay Umbreit, M.D, PH. D.Bothell, WA 980121912131632
  18. William Von Stubbe, MD00010923Yakima, WA 989021184706269
  19. Troy Wadsworth, M.D.Tacoma, WA 984051376500280
  20. Tanya Wahl, M.D.Issaquah, WA 980291326052671
  21. Xinda Wang, MDRenton, WA 980551700855822
  22. Sam WhitingSeattle, WA 981091649356460
  23. Dennis Willerford, M.D.Poulsbo, WA 983701316010804
  24. Kaylyn Kit Man Wong, MDSeattle, WA 981091942620448
  25. Janghee Woo, M.D., PH.D.Seattle, WA 981091548556384
  26. Gang Ye, MDVancouver, WA 986641245229137
  27. Joseph Ye, MD, PHDOlympia, WA 985021700881422
  28. Lorrin Yee, M.D.Tacoma, WA 984051063501666
  29. Zafer Yildirim, MD,PHDLongview, WA 986321508858812
  30. Evan YuSeattle, WA 981091043390016
  31. Rachel Yung, M.D.Seattle, WA 981091215104252
  32. Guangquan Zhao, MDLongview, WA 986321710197314
  33. Song Zhao, MDSeattle, WA 981041346562816

Source: CMS NPPES, primary taxonomy 207RX0202X: records by practice city and the list of records, file of Aug 9, 2026.

Washington ranks 11 of 51 per resident

  1. Missouri2.5
  2. Florida2.5
  3. Vermont2.5
  4. Washington2.3
  5. New Hampshire2.1
  6. Pennsylvania2.0
  7. 50 states and D.C.1.7

Source: CMS NPPES, primary taxonomy 207RX0202X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

72.1% of these records appear in a Medicare file, against 81.8% 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. Washington72.1%
  2. United States81.8%

Medical Oncology Physician records in Washington, measured

  • In a Medicare file132 of 183 · 72.1% here, 81.8% nationally
  • In the CMS Doctors and Clinicians file112 · 61.2% here, 72.5% nationally
  • Not updated in five years or more129 · 70.5% here, 49.3% nationally
  • Median graduation year1998 · the 112 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RX0202X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

183 NPPES records list medical oncology physician (207RX0202X) as their primary taxonomy with a practice address in Washington: 2.3 per 100,000 residents against 1.7 nationally (50 states and D.C.). Seattle has 94 of them (51%).

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. Illinois182
  2. Michigan177
  3. North Carolina191
  4. Ohio169

States with a similar rate per 100,000

  1. Vermont2.5
  2. Florida2.5
  3. Missouri2.5
  4. Oregon2.5

The largest states

  1. Florida561
  2. New York548
  3. Texas547
  4. California447
  5. Massachusetts421

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.