NPPES file of Aug 9, 2026

Occupational Therapy Assistant in Washington

806 NPPES records list occupational therapy assistant with a practice address in Washington, 10 per 100,000 residents, the 34th highest rate of 51. Seattle and Tacoma have the most; each record links to the provider's NPI and the Washington license search. Page 16 of 17.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 224Z00000X · 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, 64

  1. Seattle64
  2. Tacoma51
  3. Spokane43
  4. Federal Way40
  5. Puyallup33

Occupational Therapy Assistant records in Washington

  1. Paul Velasquez, COTA/LPuyallup, WA 983721588305551
  2. Julie Velthuizen, COTALynden, WA 982641063591014
  3. Catherine Vernon, COTAEdmonds, WA 980261730432881
  4. Sally Vest, COTA/LBainbridge Island, WA 981101902135437
  5. Javier Villalobos Plascencia, COTA/LBothell, WA 980121275359549
  6. Kathleen VillyardOrting, WA 983601255942439
  7. Susan Vivolo, COTAPuyallup, WA 983721952834202
  8. Gale VogeleyRenton, WA 980571790109007
  9. Sue VoglSpokane Valley, WA 992061750588612
  10. Anna Vong, OC 60398483Seattle, WA 981441831593458
  11. Stevie Wagar, COTA/LNewport, WA 991561629673751
  12. Elizabeth Walbridge, COTA/LKent, WA 980301356692941
  13. Sarah Walker, COTA/L, CLTBothell, WA 980121023507522
  14. Jennifer Wall, COTAPullman, WA 991631760901037
  15. Rachelle Walters, COTAVancouver, WA 986611851797401
  16. Janet Webb, COTAEdmonds, WA 980261255007472
  17. Suzanne Webster, COTA/LTacoma, WA 984061548512866
  18. Katherine Weibl, COTAHoquiam, WA 985501689099376
  19. Susan Weick, COTA/LAuburn, WA 980021053553222
  20. Hearher Weiler, COTAPuyallup, WA 983751295115194
  21. Tamera Wells, COTA/LNewport, WA 991561548656267
  22. Michala Wetherington, COTASeattle, WA 981331114664828
  23. Aaron WhiteSpokane, WA 992031750092482
  24. Tricia White, COTA/LSeattle, WA 981031548514052
  25. Eleanor Whitman, COTA/LKent, WA 980301790122968
  26. Chantel WieberPuyallup, WA 983721609245026
  27. Stacy Wien, COTABothell, WA 980111972152478
  28. Karlee Wilder, COTARedmond, WA 980521700520590
  29. Ashley Williams, COTARichland, WA 993521356070981
  30. Kalle Williams, COTA/LPuyallup, WA 983741447829320
  31. Larae Williams, OC60901234Federal Way, WA 980031932677341
  32. Michelle WilliamsNewcastle, WA 980591194176693
  33. Patrick Williams, OTATenino, WA 985891902238017
  34. Jennifer WilliamsonLynnwood, WA 980361639793979
  35. Donna Wilson, COTARedmond, WA 980521104252741
  36. Nicole Wilson, COTA/LStanwood, WA 982921578081964
  37. Paula Winters, COTAVancouver, WA 986641205036019
  38. Meghan Wipf, COTABellingham, WA 982251093218596
  39. Kerrie Wise, COTAKent, WA 980311457772907
  40. Gabriel Witters, COTAPuyallup, WA 983721427718212
  41. Madeleine Wolfe, COTAWashougal, WA 986711093052540
  42. Joann WolpertSpokane, WA 992031023278553
  43. Kellene WongSeattle, WA 981041467038463
  44. Deborah Wright, COTA/LPullman, WA 991631124363189
  45. Flora Wright, COTASpokane, WA 992051619928967
  46. Sunshine Yap, COTA/LDes Moines, WA 981981942699301
  47. Maggie Yeo, COTARochester, WA 985791780546457
  48. Chloe Yoo, COTADes Moines, WA 981981275380321
  49. Heajung YoonEverett, WA 982011972994523
  50. Anne York, COTASeattle, WA 981021164366894

Source: CMS NPPES, primary taxonomy 224Z00000X: records by practice city and the list of records, file of Aug 9, 2026.

Washington ranks 34 of 51 per resident

  1. Wyoming11
  2. Massachusetts11
  3. Maryland11
  4. Washington10
  5. Oregon9
  6. Michigan9
  7. 50 states and D.C.12

Source: CMS NPPES, primary taxonomy 224Z00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

0.0% of these records appear in a Medicare file, against 0.1% 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. Washington0.0%
  2. United States0.1%

Occupational Therapy Assistant records in Washington, measured

  • In a Medicare file0 of 806 · 0.0% here, 0.1% nationally
  • In the CMS Doctors and Clinicians file0 · 0.0% here, 0.1% nationally
  • Not updated in five years or more576 · 71.5% here, 72.0% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 224Z00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

806 NPPES records list occupational therapy assistant (224Z00000X) as their primary taxonomy with a practice address in Washington: 10 per 100,000 residents against 12 nationally (50 states and D.C.). Seattle has 64 of them (8%).

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. South Carolina744
  2. Massachusetts741
  3. Kentucky714
  4. Michigan903

States with a similar rate per 100,000

  1. Maryland10.6
  2. Wyoming11.1
  3. Oregon9.2
  4. Colorado11.7

The largest states

  1. Texas4,278
  2. Florida3,825
  3. New York2,732
  4. Ohio2,421
  5. Pennsylvania2,155

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.