NPPES file of Aug 9, 2026

Radiation Oncology Physician in Washington

198 NPPES records list radiation oncology physician with a practice address in Washington, 2.5 per 100,000 residents, the 10th highest rate of 51. Seattle and Tacoma 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 2085R0001X · 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, 97

  1. Seattle97
  2. Tacoma10
  3. Kennewick8
  4. Spokane Valley8
  5. Vancouver8

Radiation Oncology Physician records in Washington

  1. John Shaw, MDSpokane Valley, WA 992161518969021
  2. Annemarie Shepherd, MDSeattle, WA 981951356669279
  3. Tracy Sherertz, M.D.Seattle, WA 981121265661839
  4. Faisal Siddiqui, MD, PHDVancouver, WA 986841063648947
  5. Peter Sien, MDKennewick, WA 993361053399568
  6. Robin Smith, MDSpokane Valley, WA 992161427118686
  7. Guobin Song, MDSeattle, WA 981011114000601
  8. Jiheon SongSeattle, WA 981011710339882
  9. Michael Soronen, MDTacoma, WA 984051861463242
  10. James Spiegel, M.D.Issaquah, WA 980291093716912
  11. Stephen Springate, MDBremerton, WA 983101245222173
  12. Andrew Suen, M.D.Seattle, WA 981011851505408
  13. Justin Suszko, MDLacey, WA 985031184866527
  14. Sasha SwensenSpokane, WA 992041174151815
  15. Waylene Swensen, MDSeattle, WA 981331104901933
  16. Robert Takamiya, M.D.Edmonds, WA 980261821011206
  17. Jamie Takayesu, MDSeattle, WA 981951326509662
  18. Eric Taylor, MDKirkland, WA 980341780790055
  19. Marie Taylor, MDSequim, WA 983821932127636
  20. Michael Taylor, M.D.Bellingham, WA 982261871596502
  21. Alan Tesler, M.D.Burien, WA 981661629092705
  22. Stephen Thatcher, M.D.Spokane, WA 992041851628077
  23. Brent Tinnel, M.D.Olympia, WA 985021750397071
  24. Mari TokitaSeattle, WA 981951558598987
  25. Audrey Tran, MDSeattle, WA 981091952419491
  26. John Travaglini, M.D.Renton, WA 980551902820095
  27. Andrew Trister, MD, PHDSeattle, WA 981021831328566
  28. Jacob Trotter, MDSeattle, WA 981041528528965
  29. Joseph Tsai, MD, PHDTacoma, WA 984051043875297
  30. Yolanda Tseng, MDSeattle, WA 981331588892749
  31. Robyn Vera, DOSilverdale, WA 983831033370705
  32. Sandra Vermeulen, M.D.Seattle, WA 981221578586962
  33. Winston Vuong, MDSeattle, WA 981951689134090
  34. Loise Wairiri, MDSeattle, WA 981951881277390
  35. Kent Wallner, M.D.Seattle, WA 981081770683492
  36. Herbert Wang, MDTacoma, WA 984051699746081
  37. Emily Weg, MDSeattle, WA 981091417343583
  38. Haleigh Werner, M.D.Lacey, WA 985031508815440
  39. Kathi White, ARNPSeattle, WA 981121487705380
  40. Michal Whiton, M.D.Mount Vernon, WA 982741407058365
  41. William Wisbeck, M.D.Everett, WA 982011659339356
  42. Helen Xiao-Li, MDSequim, WA 983821538157946
  43. Natalie XuAuburn, WA 980011154506665
  44. Joy Yan, MD, PHDSeattle, WA 981951679893903
  45. Pete Yeh, MDSeattle, WA 981951235657016
  46. Rosanna Yeung, M.D.Kirkland, WA 980341669829289
  47. Jing Zeng, MDSeattle, WA 981951689876575
  48. Sherry Zhao, M.D.Kennewick, WA 993361841603479

Source: CMS NPPES, primary taxonomy 2085R0001X: records by practice city and the list of records, file of Aug 9, 2026.

Washington ranks 10 of 51 per resident

  1. Oregon2.7
  2. Rhode Island2.6
  3. Wisconsin2.6
  4. Washington2.5
  5. Ohio2.5
  6. South Dakota2.4
  7. 50 states and D.C.2.1

Source: CMS NPPES, primary taxonomy 2085R0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

80.3% of these records appear in a Medicare file, against 82.3% 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. Washington80.3%
  2. United States82.3%

Radiation Oncology Physician records in Washington, measured

  • In a Medicare file159 of 198 · 80.3% here, 82.3% nationally
  • In the CMS Doctors and Clinicians file141 · 71.2% here, 74.0% nationally
  • Not updated in five years or more115 · 58.1% here, 54.6% nationally
  • Median graduation year2006 · the 141 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2085R0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

198 NPPES records list radiation oncology physician (2085R0001X) as their primary taxonomy with a practice address in Washington: 2.5 per 100,000 residents against 2.1 nationally (50 states and D.C.). Seattle has 97 of them (49%).

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. Georgia180
  2. North Carolina230
  3. Minnesota160
  4. Michigan239

States with a similar rate per 100,000

  1. Ohio2.5
  2. Wisconsin2.6
  3. Rhode Island2.6
  4. South Dakota2.4

The largest states

  1. California735
  2. Florida520
  3. New York449
  4. Texas449
  5. Pennsylvania383

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.