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 8 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. Rachel Damian, COTA/LGlendale, CA 912071316573744
  2. Faika DamusBakersfield, CA 933061538694682
  3. Jeffrey DananVan Nuys, CA 914051295430395
  4. Mel Dandan, OTASan Ysidro, CA 921731477206779
  5. Ngoc Han DangYorba Linda, CA 928861356074371
  6. Truong Danh, OTACorona, CA 928791609406693
  7. Kira Daniels, COTA/LApple Valley, CA 923071770373888
  8. Kathleen DanoLa Palma, CA 906231962890442
  9. Sarah Danser, COTATwentynine Palms, CA 922771992120836
  10. Anastasia Daravong, COTA/LSan Diego, CA 921081346656014
  11. Jason DasBakersfield, CA 933061689187643
  12. Laleen Datt, COTA/LOakland, CA 946101528396694
  13. Cheyanne DavidsonLos Angeles, CA 900341649112467
  14. Jenifer Davies, COTALake Forest, CA 926301538923289
  15. Brianna DavisRialto, CA 923761689210452
  16. Brielle Davis, COTAOceanside, CA 920561801262852
  17. Krystina Davis, COTATorrance, CA 905051235857418
  18. Shaneill DavisLos Angeles, CA 900471508254186
  19. Dina Davolio, COTALaguna Hills, CA 926531811532757
  20. Kelly Dawson, RBT, COTAStockton, CA 952041578048526
  21. Edita De GuzmanWest Covina, CA 917901649667676
  22. Gelbert De Guzman, OTAEncino, CA 914361003452863
  23. Toni De HerreraVacaville, CA 956881841560257
  24. Andrew De La Cruz, COTALong Beach, CA 908061730874470
  25. Maria De La Luz, COTA/LLancaster, CA 935361043020902
  26. Patricia De La TorreWhittier, CA 906061609341270
  27. Jason De LeonLynwood, CA 902621962108738
  28. Katherine De LeonWhittier, CA 906061447912514
  29. Mirian De Moura Souza, COTA/LRiverside, CA 925051558759365
  30. Monica De OcampoPanorama City, CA 914021346865664
  31. Alexandre De SantannaMontebello, CA 906401407245640
  32. Cintia De Souza WilliamsBeaumont, CA 922231356116909
  33. Dexter De VeraAlhambra, CA 918031215375514
  34. Sidney DeatheragePalm Desert, CA 922111740993807
  35. Jennifer Debraal, COTA/LGardena, CA 902471134854904
  36. Nicole DegraciaWhittier, CA 906061508452640
  37. Josef Zildjian Dejos, OTABuena Park, CA 906201487523601
  38. Denise Colleen Del Cano, COTASanta Ana, CA 927051659769719
  39. Daniela Del CidLos Angeles, CA 900471376222729
  40. Eric John Del MarCarson, CA 907451528457512
  41. Jed Del RosarioWest Covina, CA 917901912694282
  42. Jikko Joven Del RosarioFontana, CA 923351700583721
  43. Christopher Dela CruzRancho Cucamonga, CA 917391427448422
  44. Jeanette Dela Cruz, COTANorth Hills, CA 913431952956617
  45. Melanie Dela Cruz, COTABellflower, CA 907061194196600
  46. Cristal DelgadoSan Jacinto, CA 925821740786409
  47. Noel DelgadoFullerton, CA 928331740832583
  48. Nicholas Delia, COTA/LWest Covina, CA 917901598499378
  49. Karen Demarco, OTARoseville, CA 956611649570649
  50. Simon DemianCamarillo, CA 930101679459705

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.