NPPES file of Aug 9, 2026

Occupational Therapist in California

9,244 NPPES records list occupational therapist with a practice address in California, 24 per 100,000 residents, the 50th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 124 of 185.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 225X00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Los Angeles has the most, 794

  1. Los Angeles794
  2. San Diego661
  3. San Francisco341
  4. San Jose245
  5. Torrance198

Occupational Therapist records in California

  1. Byoung Oh, MA OTR/LBuena Park, CA 906211871809897
  2. Stephen Oh, OTRCerritos, CA 907031528579737
  3. Jennifer Ohara, OTR/LMountain View, CA 940411497374045
  4. Kendall Ohara, OTR/LRowland Heights, CA 917481891327037
  5. Janise Ojeda, OTRSan Diego, CA 921231831545664
  6. Johanna Alyssa Ojeda, OTD, OTR/LSylmar, CA 913421245833052
  7. Keri Ojeda, OTR/LLivermore, CA 945501851401236
  8. Masaru Okajima, MS, MOT, OTR/LOakland, CA 946091821481029
  9. Jasmine Okamoto, OTR/LLos Angeles, CA 900071285380238
  10. Dyan Oki, OTRConcord, CA 945201679729230
  11. Marizol OkoliWhittier, CA 906061235871005
  12. Joseph Okon, OTR/LPalm Desert, CA 922111972750297
  13. Michele Okoomian, COTA/L, CDP, CFPSAptos, CA 950031033963335
  14. Lisaann Okubo, OT/LMission Hills, CA 913451437782224
  15. Ronald Okubo, OTFullerton, CA 928351316922594
  16. Michele Olafsson, OTR/LSacramento, CA 958411225427214
  17. Omolara Olajide-Ogunye, OTRThousand Oaks, CA 913611548721921
  18. Don OlayvarClovis, CA 936191912354143
  19. Benjamin OlchHuntington Beach, CA 926491629498258
  20. Jordan Olenberger, OTR/LPetaluma, CA 949541568822096
  21. Chantal Olenczuk, OTR/LPasadena, CA 911061508425885
  22. Kimberly OlesRancho Mirage, CA 922701013122951
  23. Gwendolyn Olicker, OTR/LBurbank, CA 915051972801116
  24. Teodorico Oliva, OTR/LCanoga Park, CA 913041619334885
  25. Thomas Oliva, OTDPinole, CA 945641851126692
  26. Steven OliverLos Angeles, CA 900421346949716
  27. Constance Ollivier, OTR/LThousand Oaks, CA 913601083152557
  28. Katherine Olmedo, OTD, OTR/LSalinas, CA 939081013519255
  29. Moriam Olorunoje, LPN, OTR/LCarmichael, CA 956081194113381
  30. Joshua OlsenLos Angeles, CA 900671669391025
  31. Leila Olsen, OTRLAlhambra, CA 918031841570330
  32. Nancy OlsenTustin, CA 927821902266588
  33. Rachel Olsen, OTR/LSan Diego, CA 921211962995613
  34. Adriaana Olson, OTR/LAtascadero, CA 934221407402860
  35. Christine Olson, M.A.Irvine, CA 926201558654673
  36. Holly OlsonLaguna Hills, CA 926531922202464
  37. Ryan Olson, OTRIrvine, CA 926181598226052
  38. Ayobamibo Olujumu, OTR/LNorth Hollywood, CA 916011811737109
  39. Samantha OmTorrance, CA 905051134727159
  40. Tay OmWhittier, CA 906021629575915
  41. Victor Om, MOTDowney, CA 902401942722236
  42. Jamie OmelanczukLaguna Hills, CA 926531033816830
  43. Beverly OmoleConcord, CA 945181700909694
  44. Harrison OnMonterey Park, CA 917541992187801
  45. Monica OndriezekGilroy, CA 950201487278396
  46. Bethany OneillBerkeley, CA 947041073724746
  47. Sara OneillLake Forest, CA 926301053824540
  48. Joyce Ong, OTRTorrance, CA 905011043432974
  49. Laylim Ong, OTR/LMonterey Park, CA 917551801915269
  50. Amy OnishiAnaheim, CA 928041275008278

Source: CMS NPPES, primary taxonomy 225X00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 50 of 51 per resident

  1. Nevada24
  2. Alabama24
  3. Hawaii24
  4. California24
  5. Oklahoma24
  6. 50 states and D.C.40

Source: CMS NPPES, primary taxonomy 225X00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

8.6% of these records appear in a Medicare file, against 10.2% 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. California8.6%
  2. United States10.2%

Occupational Therapist records in California, measured

  • In a Medicare file796 of 9,244 · 8.6% here, 10.2% nationally
  • In the CMS Doctors and Clinicians file911 · 9.9% here, 11.6% nationally
  • Not updated in five years or more5,208 · 56.3% here, 63.4% nationally
  • Median graduation year2018 · the 910 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 225X00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

9,244 NPPES records list occupational therapist (225X00000X) as their primary taxonomy with a practice address in California: 24 per 100,000 residents against 40 nationally (50 states and D.C.). Los Angeles has 794 of them (9%).

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. Florida7,925
  2. Texas7,689
  3. Pennsylvania7,136
  4. Illinois5,855

States with a similar rate per 100,000

  1. Hawaii23.8
  2. Oklahoma23.6
  3. Alabama24.3
  4. Nevada24.4

The largest states

  1. New York13,350
  2. Florida7,925
  3. Texas7,689
  4. Pennsylvania7,136
  5. Illinois5,855

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.