NPPES file of Aug 9, 2026

Behavior Analyst in California

20,348 NPPES records list behavior analyst with a practice address in California, 52 per 100,000 residents, the 5th highest rate of 51. Costa Mesa and San Diego have the most; each record links to the provider's NPI and the California license search. Page 270 of 407.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 103K00000X · method

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

Costa Mesa has the most, 1,239

  1. Costa Mesa1,239
  2. San Diego1,157
  3. Sacramento597
  4. Los Angeles534
  5. Woodland Hills509

Behavior Analyst records in California

  1. Antoinette OliverEl Segundo, CA 902451851218705
  2. Brittney Oliver, MAT-ABATorrance, CA 905021922471531
  3. Graciela OliverRiverside, CA 925061588396436
  4. Janet OliverSan Diego, CA 921211194167155
  5. Resa OliverWoodland Hills, CA 913671740820448
  6. Veronica Oliver, MA, BCBAGarden Grove, CA 928401245729912
  7. Jacqueline Olivera-PeraltaSalinas, CA 939071114850427
  8. Eidyll Oliveros, BCBACalabasas, CA 913021689157687
  9. Adam Olives, BCBACitrus Heights, CA 956101235486168
  10. Amanda Olivier, BCBAConcord, CA 945201407422686
  11. Jorge OlivosMoreno Valley, CA 925571306326814
  12. Benjamin OllarModesto, CA 953581477436418
  13. Nicole Ollivier, IMFVista, CA 920841124197306
  14. Danielle OlmedoHayward, CA 945411881151066
  15. Elizabeth OlmenSan Diego, CA 921231639809551
  16. Andrea Olmos, MA, BCBAFresno, CA 937111861908964
  17. Briana OlmosOntario, CA 917641912726688
  18. Joanna OlmosLake View Terrace, CA 913421114306057
  19. Priscilla Olmos, B.S.Victorville, CA 923921073991600
  20. Avery OlmsteadSan Diego, CA 921081013632165
  21. Joshua Olmstead, MA, BCBABrentwood, CA 945131194066241
  22. Stacy Olney, BCBA 1-21-55585Colton, CA 923241417473257
  23. Mariecris OlonanNapa, CA 945581356039481
  24. Alyssa OlowSan Ramon, CA 945831457723199
  25. Dorcas OlowuCompton, CA 902211134811854
  26. Ashley Olsen, BCBAConcord, CA 945201467835645
  27. Brittany Olsen, M.ED.San Francisco, CA 941031689175788
  28. Daniel Olsen, BCBAMonrovia, CA 910161164794004
  29. Andrew Olson, RBTFresno, CA 937101275033748
  30. Chloe OlsonRedondo Beach, CA 902771134073166
  31. Citiee OlsonOakland, CA 946061114419595
  32. Courtney OlsonEl Centro, CA 922431326518762
  33. Margrit OlsonSan Diego, CA 921311992190466
  34. Alexandra OlveraOakland, CA 946061144724063
  35. Alexandria OlveraDaly City, CA 940151780493841
  36. Jose Olvera, RBTSan Diego, CA 921211588170781
  37. Sadie Ombach, BCBADaly City, CA 940151518476662
  38. Nicole OmegaModesto, CA 953541750884250
  39. Jenna Omick, BCBALafayette, CA 945491528559150
  40. Martin Jason Omoto, M.S., BCBASan Diego, CA 921081275074288
  41. Naomi Omotola, BCBASan Jose, CA 951261497232961
  42. Lily OnIrvine, CA 926141427698810
  43. Anthony OngSan Ramon, CA 945831144695743
  44. Julie Ann Ong, MA, BCBASan Jose, CA 951291558866244
  45. Hawk OngchangcoCosta Mesa, CA 926261407725435
  46. Naomi OngjancoSan Bruno, CA 940661881330785
  47. Beste OngunAmerican Canyon, CA 945031780180067
  48. Adebola OniTorrance, CA 905031700631884
  49. Arcelia OnofreVallejo, CA 945901962967570
  50. Nicole Onstad, BCBA 1-04-1919Laguna Niguel, CA 926771710223466

Source: CMS NPPES, primary taxonomy 103K00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 5 of 51 per resident

  1. Massachusetts67
  2. Hawaii63
  3. Florida60
  4. California52
  5. New Mexico47
  6. Oklahoma44
  7. 50 states and D.C.32

Source: CMS NPPES, primary taxonomy 103K00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

under 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. California0.0%
  2. United States0.1%

Behavior Analyst records in California, measured

  • In a Medicare file5 of 20,348 · under 0.1% here, 0.1% nationally
  • In the CMS Doctors and Clinicians file14 · 0.1% here, 0.1% nationally
  • Not updated in five years or more10,235 · 50.3% here, 47.0% nationally
  • Median graduation year2017 · the 14 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 103K00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

20,348 NPPES records list behavior analyst (103K00000X) as their primary taxonomy with a practice address in California: 52 per 100,000 residents against 32 nationally (50 states and D.C.). Costa Mesa has 1,239 of them (6%).

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. Florida13,565
  2. Texas5,837
  3. New York5,183
  4. Massachusetts4,718

States with a similar rate per 100,000

  1. New Mexico47.5
  2. Oklahoma44.0
  3. New Hampshire41.8
  4. Hawaii63.5

The largest states

  1. Florida13,565
  2. Texas5,837
  3. New York5,183
  4. Massachusetts4,718
  5. Nevada4,540

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.