NPPES file of Aug 9, 2026

Occupational Therapy Assistant in Oregon

388 NPPES records list occupational therapy assistant with a practice address in Oregon, 9 per 100,000 residents, the 35th highest rate of 51. Milwaukie and Portland have the most; each record links to the provider's NPI and the Oregon license search. Page 8 of 8.

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).

Milwaukie has the most, 108

  1. Milwaukie108
  2. Portland70
  3. Salem23
  4. Wilsonville22
  5. Medford18

Occupational Therapy Assistant records in Oregon

  1. Rachel Treiger, COTAAshland, OR 975201427599406
  2. Kathie Umenhofer, COTAEugene, OR 974011447762323
  3. Christy UmgelderMilwaukie, OR 972221801332796
  4. Paige Undseth, COTA/LNorth Bend, OR 974591497179907
  5. Arielle Upchurch, COTAPortland, OR 972211962904037
  6. Regina ValainisLa Grande, OR 978501457778326
  7. Brian Vaughn, COTAMilwaukie, OR 972221245407014
  8. Joanne Vazquez, COTAPortland, OR 972151932561784
  9. Kathy Verboort, COTA/AKeizer, OR 973031881922151
  10. Sharry VetterLebanon, OR 973551427449412
  11. Kellie Volmer, LMP, COTAPortland, OR 972391295088649
  12. Lisa WalkerCanby, OR 970131275005878
  13. Jillian Walter, COTA/LEugene, OR 974051255734562
  14. Kendra Ward, OTAAstoria, OR 971031689973364
  15. Jaclyn Warren, COTAMilwaukie, OR 972221366802423
  16. Deborah Weaver, COTA/LMedford, OR 975041821250812
  17. Mamie WeaverMilwaukie, OR 972221134674997
  18. Carol Wellbrock, COTAAlbany, OR 973211851125074
  19. Chloe Wenz, COTA/LBend, OR 977011386383313
  20. Traci West, CERTIFIED OCCUPATIONMliwaukie, OR 972221740342138
  21. Donna Wiedenbeck, COTAMilwaukie, OR 972221508021031
  22. Rowena Wier, CERTIFIED OCCUPATIONMilwaukie, OR 972221780733493
  23. Karen Williams, C.O.T.A.Brookings, OR 974151356672653
  24. Emma Willis, COTA/LMedford, OR 975041497441117
  25. Kari Wilson, COTA/LMilwaukie, OR 972221215722616
  26. Stephen WilsonSaint Paul, OR 971371447600358
  27. Holly WinansSalem, OR 973061831847854
  28. Dawnah Winfield, COTASalem, OR 973021588826333
  29. Kimberly WolfordMilwaukie, OR 972221386268985
  30. Benjamin WoodNorth Bend, OR 974591629409339
  31. Sandra Wood, COTA/LMilwaukie, OR 972221215183017
  32. Tezeta Workie, COTAWilsonville, OR 970701457744732
  33. Jennifer Worth, COTAMilwaukie, OR 972221114344603
  34. Amy YoastBrookings, OR 974151134405335
  35. Jeanne YoungMilwaukie, OR 972221376789172
  36. Sanford Young, COTASalem, OR 973021770776122
  37. Rachel ZieglerWillsonville, OR 970701346610607
  38. Autumn ZuidemaMilwaukie, OR 972221548751100

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

Oregon ranks 35 of 51 per resident

  1. Massachusetts11
  2. Maryland11
  3. Washington10
  4. Oregon9
  5. Michigan9
  6. Idaho8
  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.

What the count covers

388 NPPES records list occupational therapy assistant (224Z00000X) as their primary taxonomy with a practice address in Oregon: 9 per 100,000 residents against 12 nationally (50 states and D.C.). Milwaukie has 108 of them (28%).

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. Minnesota421
  2. Mississippi349
  3. West Virginia349
  4. Connecticut447

States with a similar rate per 100,000

  1. Michigan9.0
  2. Idaho8.3
  3. Vermont8.3
  4. Iowa8.3

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.