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 3 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. Marvin Balbuena, COTAWest Covina, CA 917921881231504
  2. Elizabeth BalielCarmichael, CA 956081144618489
  3. Jasmin BalleraBellflower, CA 907061659077758
  4. Arielle BaltazarUnion City, CA 945871861375370
  5. Ruby BaluyotMurrieta, CA 925621932800182
  6. Steffi BaluyotGlendale, CA 912061205563749
  7. Ysabel BaluyotMountain View, CA 940401801353255
  8. Sasha Ember BanagaEncino, CA 914361811766538
  9. Kenneth Barnes, COTACarmichael, CA 956081194061051
  10. Sandra Barrera MendezAnaheim, CA 928011003548504
  11. Betsy BarrettWhittier, CA 906021306312699
  12. Maya BarrettSanta Rosa, CA 954091700137767
  13. Nicole Barrett, COTA/LBrea, CA 928211871210229
  14. Raymond BarrowPlacentia, CA 928701427751601
  15. Julie Barto, COTALos Gatos, CA 950321003482910
  16. Jeimy Loey BartolataMonrovia, CA 910161578267100
  17. Rovilyn BascoChula Vista, CA 919131811386279
  18. Maha BasidiqSanta Maria, CA 934551033507223
  19. Jessica Baskin, COTA/LFremont, CA 945361306446562
  20. Debra BatesonLa Jolla, CA 920371457485807
  21. Fred Batiller, COTA/LRancho Cucamonga, CA 917011821431958
  22. Gema BautistaPalm Desert, CA 922111700542495
  23. Rocio BautistaRiverside, CA 925061336937499
  24. Wendy Beach, COTASanta Barbara, CA 931111962695742
  25. Kayla Beaulieu, COTASanta Barbara, CA 931051992454540
  26. Lilian BecerraSan Diego, CA 921141730552126
  27. Jessica Becerril, COTA/LFountain Valley, CA 927081952613291
  28. Tanya Becker, COTASan Diego, CA 921021740743657
  29. Eriberto Beduya, OTA/LGranada Hills, CA 913441194480038
  30. Katherine Beers, COTA/LNational City, CA 919501952011231
  31. Valerie BelangerTorrance, CA 905021336802610
  32. Valerie Bendana, COTALa Verne, CA 917501366830184
  33. Talia Bentivengo, COTATemecula, CA 925901013520725
  34. Amy Benton, COTALa Jolla, CA 920371124748215
  35. Irene BerdoteNorwalk, CA 906501578005187
  36. Karen BerendtAuburn, CA 956021457511644
  37. Samantha Bermudez, COTA/LValencia, CA 913551851281638
  38. Darryl Bernabe, COTA/LCorona, CA 928791174266563
  39. Barbara Bernenswilliams, OTSan Diego, CA 921031679886956
  40. Laurel Bertini, COTATwentynine Palms, CA 922771114461381
  41. Delia Betancourt Manale, COTAMontebello, CA 906401063798239
  42. Brianna Betschel, COTABrea, CA 928211962288522
  43. Evan Bettey, COTA/LLakeport, CA 954531598279259
  44. Brittany Beverlin, COTA/LRedlands, CA 923731710703665
  45. Edgar Bezada, COTAMadera, CA 936381760286132
  46. Amy Bick, COTA/LSan Diego, CA 921081548775927
  47. Karen Bigcas, COTA/LNational City, CA 919501699165712
  48. Rosemary Bilby, COTAOxnard, CA 930361184836439
  49. Crystal Billings, COTA/LRancho Cordova, CA 956701851869440
  50. Michelle BirdFremont, CA 945361477725414

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.