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 267 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. Jennifer O'Connell, BARosemead, CA 917701730641853
  2. Ryan O'ConnellSacramento, CA 958261336615087
  3. Alexis O'ConnorIrvine, CA 926141922640200
  4. Liam O'ConnorSan Diego, CA 921111902461486
  5. Carol O'FlahertyMonrovia, CA 910161891575395
  6. James O'Flarity, M.S., BCBATorrance, CA 905051477362382
  7. Callahan O'GormanRancho Cucamonga, CA 917301629928882
  8. Elizabeth O'HaraVan Nuys, CA 914111790384857
  9. Galina O'Keefe, BCBADublin, CA 945681477069581
  10. Christine O'KellyBelmont, CA 940021669729612
  11. Liberty O'Mahony, BCBASan Diego, CA 921281326418385
  12. Catherine O'Malley, BCBAModesto, CA 953551669739298
  13. Jennifer O'Malley, BCBA, LEPTemecula, CA 925901437498912
  14. Leah O'MearaSacramento, CA 958261295106615
  15. Gillian O'NealGrover Beach, CA 934331134018021
  16. Jenny O'NeilWalnut Creek, CA 945981891158846
  17. Jesse O'Neil, BCBASan Diego, CA 921111033603980
  18. Nial O'NeilSacramento, CA 958261972075182
  19. Amanda O'Neill, BCBASan Jose, CA 951291194611632
  20. Jessica O'RileyOntario, CA 917611164017497
  21. Juan OajacaCovina, CA 917241497545057
  22. Amazing Oakes, BCBAGardena, CA 902481164376182
  23. Ashley Oakley, HIGH SCHOOL DIPLOMARiverside, CA 925051528719598
  24. Jada Oatman, BCBAFresno, CA 937101184487720
  25. Joseph Obadahun, LICENSEEVictorville, CA 923951518762368
  26. Nazifa ObaidiRed Bluff, CA 960801205498060
  27. Michelle OberleVentura, CA 930031184118721
  28. Ola ObiakorRancho Cucamonga, CA 917301922959741
  29. Omoeghie ObidahCosta Mesa, CA 926261194603522
  30. Tamika Obiefuna, RBTLemoore, CA 932451003735143
  31. Aiza OblepiasSan Mateo, CA 944011700243847
  32. Gilka Oblitas, MALong Beach, CA 908071881244218
  33. Danielle ObongTemecula, CA 925901275114662
  34. Casey Obradovitch, BCBAGarden Grove, CA 928451245799204
  35. Danielle Obregon, MS, BCBARedlands, CA 923731285396572
  36. Lashai ObregonOntario, CA 917641548064348
  37. Kelly ObrienCosta Mesa, CA 926261053084277
  38. Ken ObrienCosta Mesa, CA 926261336800267
  39. Cesar Ocampo, MSMonterey Park, CA 917541407316623
  40. Karen OcampoAnaheim, CA 928041053828087
  41. Natalia OcampoCovina, CA 917241043083108
  42. Vanessa OcampoWoodland Hills, CA 913641821802141
  43. Vanessa Ocampo, MS, BCBAFullerton, CA 928321881251254
  44. Charlene Ocampo BoholEl Segundo, CA 902451023935806
  45. Gabriela OcarizNewport Beach, CA 926601932825742
  46. Jesse OceguedaRancho Cucamonga, CA 917391821652728
  47. Leslie OceguedaHarbor City, CA 907101811666720
  48. Rodrigo OceguedaRancho Cucamonga, CA 917301245194349
  49. Stephanie OceguedaBakersfield, CA 933131891264354
  50. Theresa OcegueraCosta Mesa, CA 926261396458873

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.