NPPES file of Aug 9, 2026

Occupational Therapy Assistant in California

1,869 NPPES records list occupational therapy assistant with a practice address in California, 5 per 100,000 residents, the 49th highest rate of 51. San Diego and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 34 of 38.

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).

San Diego has the most, 124

  1. San Diego124
  2. Los Angeles105
  3. Sacramento56
  4. Anaheim43
  5. Long Beach43

Occupational Therapy Assistant records in California

  1. Lawrence ThomasOakland, CA 946011831017870
  2. Randell Thomas, COTA/LPalm Springs, CA 922641942742473
  3. Laura Thompson, OTA/LRedding, CA 960011093022006
  4. Rhonda Thompson, COTAModesto, CA 953551437552890
  5. Tiffani ThompsonCarson, CA 907461710376116
  6. Tera ThoresonCosta Mesa, CA 926271881166502
  7. Christina Thuch, COTA/LFullerton, CA 928321740025717
  8. Carrie Thurston, COTALaguna Hills, CA 926531639212251
  9. Lori Tillotsonjahelka, COTARancho Palos Verdes, CA 902751962117465
  10. Andrew TivilikSacramento, CA 958411255126280
  11. Catherine Tobar TejadaVacaville, CA 956881891381224
  12. Jasmine TobinSacramento, CA 958171366879017
  13. Rekha TodkerTemecula, CA 925901295201697
  14. Allison ToledoLos Angeles, CA 900271508492836
  15. Romabelle ToledoNational City, CA 919501730578410
  16. Dana Tomkins, COTA/LVista, CA 920841992343495
  17. Katie TorrecillasFullerton, CA 928321508707134
  18. Casey Torres, COTASanta Ana, CA 927051598136582
  19. Danielle Torres, COTA/LCarson, CA 907451003768615
  20. Elizabeth TorresVista, CA 920831417664186
  21. Yolanda Torres, COTA/LDowney, CA 902421356864615
  22. Leslie Torruco, COTA/LLos Angeles, CA 900651518286293
  23. Adriana TostadoPalm Desert, CA 922111205293586
  24. Alexander Toussaint, COTA/LLong Beach, CA 908051790399913
  25. Elena Townsend, COTA/LApple Valley, CA 923071275476806
  26. Taylor Townsend, COTA/LCulver City, CA 902301134824972
  27. Aimy TranSan Dimas, CA 917731356078604
  28. Anh TranGarden Grove, CA 928431891284972
  29. Khang TranMountain View, CA 940401811551658
  30. Tammy TranLos Angeles, CA 900271619520988
  31. Caleb TravisHemet, CA 925441326909326
  32. Christopher TraylorMission Viejo, CA 926921336727262
  33. Brent Treihel, COTAKingsburg, CA 936311629778782
  34. Cecilia Trujillo, COTA/LApple Valley, CA 923071427991058
  35. Yorlete TrujilloTemecula, CA 925911871994558
  36. Connie TruongApple Valley, CA 923071174466700
  37. Marylin TryLong Beach, CA 908101417718859
  38. Meaza TsegayeOakland, CA 946091497289300
  39. Gloria TuGardena, CA 902471174302186
  40. Ramsey Tugoz, COTALong Beach, CA 908021326471681
  41. Darci TurnerRidgecrest, CA 935551780114397
  42. Erin Tyzbir, PTAPalmdale, CA 935511851787816
  43. Christine Tzeng, COTASan Marino, CA 911081174250153
  44. Mary Udria, COTA/LSan Dimas, CA 917731104774710
  45. Lindsey UedaHacienda Heights, CA 917451508608134
  46. Jennifer UgaldeCarson, CA 907451568138246
  47. Anne Uhlig, COTAWeed, CA 960941518475474
  48. Ana Tina Ulanday, COTA/LLos Angeles, CA 900671417733247
  49. Stephanie Untalan, COTA/LLa Verne, CA 917501255928628
  50. Angela Updegraff, COTA/LCarmichael, CA 956081942143581

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

California ranks 49 of 51 per resident

  1. Alabama5
  2. Georgia5
  3. Louisiana5
  4. California5
  5. District of Columbia4
  6. Utah4
  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.

0.1% 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. California0.1%
  2. United States0.1%

Occupational Therapy Assistant records in California, measured

  • In a Medicare file2 of 1,869 · 0.1% here, 0.1% nationally
  • In the CMS Doctors and Clinicians file2 · 0.1% here, 0.1% nationally
  • Not updated in five years or more1,080 · 57.8% 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

1,869 NPPES records list occupational therapy assistant (224Z00000X) as their primary taxonomy with a practice address in California: 5 per 100,000 residents against 12 nationally (50 states and D.C.). San Diego has 124 of them (7%).

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. Pennsylvania2,155
  2. Illinois1,498
  3. Wisconsin1,460
  4. North Carolina1,357

States with a similar rate per 100,000

  1. Louisiana4.9
  2. Georgia5.1
  3. District of Columbia4.1
  4. Alabama5.5

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.