NPPES file of Aug 9, 2026

Nephrology Physician in Washington

284 NPPES records list nephrology physician with a practice address in Washington, 3.6 per 100,000 residents, the 32nd highest rate of 51. Seattle and Spokane have the most; each record links to the provider's NPI and the Washington license search. Page 6 of 6.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RN0300X · 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, 106

  1. Seattle106
  2. Spokane26
  3. Tacoma23
  4. Vancouver18
  5. Everett14

Nephrology Physician records in Washington

  1. Bernadette Thomas, MDShoreline, WA 981331215185749
  2. Jimmy Thomas, MBBS, MPHBellingham, WA 982251518288893
  3. Catherine Thompson, MDSeattle, WA 981011316053937
  4. Frances Tian, MDTacoma, WA 984051841726411
  5. Robert Tomford, MDOlympia, WA 985061073596078
  6. Kathryn Treit, MDSeattle, WA 981041811225535
  7. Tiffany Truong, DOSeattle, WA 981011760839112
  8. Millie Tung, MD FACPBellevue, WA 980041558354191
  9. Katherine Tuttle, MDSpokane, WA 992041740399492
  10. Leanna Tyshler, M.D.Everett, WA 982011962423160
  11. Nidyanandh Vadivel, M.D.Seattle, WA 981041811069206
  12. Natasha Vanchinathan, MDTacoma, WA 984051588900161
  13. Sebastian Varas Garcia, MDBellingham, WA 982251366757692
  14. Dmitri Vasin, MDBremerton, WA 983101730132689
  15. Nalini Vassa, M.D.Kennewick, WA 993361386746220
  16. Michael Vaughan, M.D.Seattle, WA 981951962579078
  17. Sandheep Venkataraman, MDPuyallup, WA 983721447602206
  18. Sandeep Vetteth, M.D.Vancouver, WA 986641619132495
  19. Ke Wang, M.D.Seattle, WA 981091265723381
  20. Zhuowei Wang, MDPuyallup, WA 983711942240056
  21. Vaughan Washco, DOSeattle, WA 981951891085171
  22. Daniel Watford, M.D.Seattle, WA 981951992122238
  23. Andrew Weiss, MDSeattle, WA 981011023155397
  24. Ashley Widmer, MDSeattle, WA 981951962105056
  25. Robert Wilburn, MDSeattle, WA 981011962519314
  26. Sandar Win, MDBellingham, WA 982251437446010
  27. Robert Winrow, MDSeattle, WA 981041326159815
  28. Susan Wong, M.D.Seattle, WA 981951821227497
  29. Hongshi Xu, MDCamas, WA 986071396902862
  30. James Yoon, MDVancouver, WA 986861750735700
  31. Ilan Zawadzki, MDSeattle, WA 981121538111521
  32. Anna Zemke, MD, MSIssaquah, WA 980291639733991
  33. Di Zhao, M.DTacoma, WA 984051922281617
  34. Bang Zheng, MDSeattle, WA 981951366020927

Source: CMS NPPES, primary taxonomy 207RN0300X: records by practice city and the list of records, file of Aug 9, 2026.

Washington ranks 32 of 51 per resident

  1. West Virginia3.7
  2. North Carolina3.7
  3. Florida3.7
  4. Washington3.6
  5. Maine3.6
  6. Alabama3.6
  7. 50 states and D.C.4.0

Source: CMS NPPES, primary taxonomy 207RN0300X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

82.4% of these records appear in a Medicare file, against 85.8% 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. Washington82.4%
  2. United States85.8%

Nephrology Physician records in Washington, measured

  • In a Medicare file234 of 284 · 82.4% here, 85.8% nationally
  • In the CMS Doctors and Clinicians file213 · 75.0% here, 76.0% nationally
  • Not updated in five years or more169 · 59.5% here, 54.9% nationally
  • Median graduation year2003 · the 213 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RN0300X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

284 NPPES records list nephrology physician (207RN0300X) as their primary taxonomy with a practice address in Washington: 3.6 per 100,000 residents against 4 nationally (50 states and D.C.). Seattle has 106 of them (37%).

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. Missouri285
  2. Arizona278
  3. Tennessee266
  4. Indiana265

States with a similar rate per 100,000

  1. Maine3.6
  2. Alabama3.6
  3. North Dakota3.6
  4. Florida3.7

The largest states

  1. California1,468
  2. Texas1,159
  3. New York1,049
  4. Florida840
  5. Pennsylvania651

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.