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 18 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. Lisa Kollin, COTAOrinda, CA 945631033329404
  2. Edmond KonradMountain View, CA 940411396121729
  3. Naiereh KoochekiEncino, CA 914361053764555
  4. Betty Kou, BAAlhambra, CA 918011588254767
  5. Victor KozlowCarmichael, CA 956081043556806
  6. Renee Krale, COTASacramento, CA 958201124554845
  7. Caitlin Krause, OTALos Angeles, CA 900331447187604
  8. Rechil Krause, COTA/LLong Beach, CA 908061053841486
  9. Deborah Kress, COTA/LSan Diego, CA 921271447594791
  10. Akhil KrishnanLos Angeles, CA 900481700708591
  11. Rosalyn Krit, COTA/LWhittier, CA 906021497304240
  12. Kenneth KritboonyalaiLos Angeles, CA 900101942675657
  13. Emma KrohneTemecula, CA 925901033089701
  14. Gabrielle KruisheerLa Mesa, CA 919421437855590
  15. Brittany Kubista, COTA/LGarden Grove, CA 928411982078168
  16. Zhezhi Kuo, COTA/LArcadia, CA 910071629323233
  17. Michelle KuttersSan Diego, CA 921031336498773
  18. Caitlin KynettSacramento, CA 958191467934604
  19. Marie Ashley LacambraLos Angeles, CA 900191720552292
  20. Katherine LacbayLos Angeles, CA 900231679943104
  21. Lakeith LaceyChula Vista, CA 919141720456072
  22. Daniel Joseph Lafradez, COTA/LRoseville, CA 956781396548822
  23. Regulus LagareMenifee, CA 925841427754902
  24. Martin LagoLos Angeles, CA 900291972992667
  25. Stephenie Laktash, COTA/LHacienda Heights, CA 917451033562376
  26. Miguel LalotaLos Angeles, CA 900271699218743
  27. Kenny LamAnaheim, CA 928051811565443
  28. Nicky LamHuntington Beach, CA 926471104214600
  29. Olisha LambertRedlands, CA 923731356991798
  30. Marlene Lamsam, COTA/LSan Diego, CA 921031306220835
  31. Jesus LanderosSouth Gate, CA 902801710625629
  32. Sunny Landis, COTA/LPleasanton, CA 945881760155840
  33. Dana Lane, COTA/LLos Angeles, CA 900181033805460
  34. Justin Lang, COTAWillows, CA 959881861031650
  35. Natalie Lang, COTA/LChico, CA 959731932416856
  36. Gail Lankes, COTASan Luis Obispo, CA 934011346366317
  37. Marilyn Lantz, COTATwentynine Palms, CA 922771518230291
  38. Melissa LaoSan Diego, CA 921541689046443
  39. Gigilizabeth LapuzSan Francisco, CA 941031649479668
  40. Michelle LaraYorba Linda, CA 928861992933774
  41. Aimee Lara-CarrancoAnaheim, CA 928051649996661
  42. Shelly Laranang, COTALong Beach, CA 908051740651744
  43. Christina Larkin, COTA/LVallejo, CA 945911053845883
  44. Jackson Laus, COTA/LLos Angeles, CA 900391396384939
  45. Rachael LawtherSpring Valley, CA 919771518419365
  46. Arabella Layugan, COTA/LMontclair, CA 917631871350850
  47. Frances Christine LazaRialto, CA 923761679119648
  48. Isabel Lazo, COTA/LHuntington Beach, CA 926471821934670
  49. Rachel LeNorwalk, CA 906501386259273
  50. Lacey Leaf, OTAMarysville, CA 959011568823201

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.