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 31 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. Laura SchmidlPalmdale, CA 935511417380940
  2. Jessica SchorkOrange, CA 928681942969555
  3. Genevieve Schorr, COTA/LLos Angeles, CA 900391700174471
  4. John ScottTorrance, CA 905021407973951
  5. April Sebastian, COTASan Diego, CA 921221770282691
  6. Jodi SeguinRiverside, CA 925031629951058
  7. Scott SeidmanLaguna Hills, CA 926531790992527
  8. Christina Selby, COTASimi Valley, CA 930631790378461
  9. Christine SelnaAnaheim, CA 928051649921685
  10. Donna Semione, COTAMission Viejo, CA 926921831485176
  11. Olga Senchea-Teodor, COTAVan Nuys, CA 914111497111330
  12. Thao Seng, COTA/LSacramento, CA 958281194112722
  13. John SerranoNorwalk, CA 906501326609132
  14. Toni Marie Serrano, COTAFountain Valley, CA 927081720873870
  15. Augustus Caesar Sese, COTAPleasant Hill, CA 945231033267646
  16. Iffat Shah, COTADavis, CA 956161124588587
  17. Priti ShahArtesia, CA 907011952799959
  18. Edward Shakhbazyan, COTAEncino, CA 914361144998824
  19. Allisen Shaw, OTAModesto, CA 953561891545018
  20. Daniel Shaw-Cedeno, COTASan Diego, CA 921541568383735
  21. Savanna SheffieldSan Diego, CA 921081922657246
  22. Lorraine Sherrie, COTA/CDana Point, CA 926291427476183
  23. Erin Sherwood, COTA/LLaguna Hills, CA 926531073398384
  24. Elizabeth Shimoi, CERTIFIED OCCUPATIONLancaster, CA 935341326684309
  25. Patricia Shiokari, COTAOrange, CA 928691972707156
  26. Jaspreet Shoker, COTA/LFowler, CA 936251811743438
  27. Nicholas Shorty, COTAStudio City, CA 916041427903368
  28. Carolyn ShukerallaBakersfield, CA 933011598404105
  29. Gina Sian, OTClovis, CA 936191407905664
  30. John Siangio, COTACulver City, CA 902301831850775
  31. Matthew Sickler, COTASan Gabriel, CA 917751396133823
  32. Crystal Sierra, COTA/LSan Diego, CA 921031093358921
  33. Emily SiglSun Valley, CA 913521306600366
  34. Cheryl SilvaBerkeley, CA 947021861704033
  35. Kimberly SilvaAnaheim, CA 928051497475099
  36. Alisa SimonyanNorth Hollywood, CA 916051386344224
  37. Victoria SimplisRedondo Beach, CA 902781053018481
  38. Kelly Simpson, COTASan Diego, CA 921031245368745
  39. Mandeep SinghSylmar, CA 913421386421519
  40. Patrizia SingzonGlendale, CA 912061730885476
  41. Kenneth SirotaSan Diego, CA 921221376086918
  42. April Sisk, COTASolana Beach, CA 920751023302791
  43. Jaime SiuGlendale, CA 912031730640681
  44. Emily Skinner, COTA/LDanville, CA 945061386995629
  45. Shelley SlackYucca Valley, CA 922841669604435
  46. Lenley Slepicka, COTAHuntington Beach, CA 926481427353275
  47. Angel SmithOrange, CA 928681376932012
  48. Chelsea Smith, COTA/LSan Leandro, CA 945771265276489
  49. Garyson SmithMenifee, CA 925841487481354
  50. Jennifer SmithChico, CA 959281912419268

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.