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 93 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. Aliya DiazRiverside, CA 925091851034383
  2. Amy DiazVictorville, CA 923921447892625
  3. Ashley Diaz, BCBASacramento, CA 958271588116297
  4. Ava DiazSan Ramon, CA 945831316579204
  5. Brandy DiazCosta Mesa, CA 926261801408356
  6. Carla DiazPomona, CA 917661346868338
  7. Cindy DiazOrange, CA 928671629536701
  8. Coral DiazCorona, CA 928791184266975
  9. Corrina Diaz, M.ED., BCBARancho Cucamonga, CA 917301326407172
  10. Denise DiazLa Palma, CA 906231588301238
  11. Desiree DiazPasadena, CA 911061558078972
  12. Desiree DiazSacramento, CA 958161659136471
  13. Diana Diaz, MSRancho Cucamonga, CA 917301033821855
  14. Elizabeth Diaz, BAHayward, CA 945411992281059
  15. Heather Diaz, BCBASan Diego, CA 921281568913861
  16. Ileana DiazAnaheim, CA 928051225535107
  17. Jessica Diaz, BCBASan Francisco, CA 941101578021457
  18. Jocelyn DiazFair Oaks, CA 956281346717386
  19. Jorge DiazRosamond, CA 935601912474859
  20. Julisa DiazThousand Oaks, CA 913601730810235
  21. Kathie DiazTulare, CA 932741326612771
  22. Leilani DiazTemecula, CA 925901730687203
  23. Leilani DiazLathrop, CA 953301326973082
  24. Lineli DiazEl Segundo, CA 902451659291227
  25. Lucas DiazLos Angeles, CA 900431770439945
  26. Luis DiazPasadena, CA 911061508445198
  27. Maia Ilana DiazGardena, CA 902481124802541
  28. Melody DiazWoodland Hills, CA 913671750876272
  29. Pierre DiazSherman Oaks, CA 914231609214725
  30. Rebecca DiazIrvine, CA 926141497572440
  31. Ricardo DiazTemecula, CA 925901346758869
  32. Rocky Diaz, M.ASanta Cruz, CA 950621770052847
  33. Roxanna Diaz, M.S., B.A.Encino, CA 914361336755131
  34. Ryan Diaz, A.A. DEGREERiverside, CA 925051841630621
  35. Stephanie Diaz, BCBASan Jose, CA 951121174092365
  36. Summer Diaz, MS, BCBAEncino, CA 913161871326066
  37. Wendy DiazBakersfield, CA 933121013771724
  38. Yadira DiazIndio, CA 922011073368445
  39. Yesenia Diaz, M.S., BCBAGardena, CA 902481114659760
  40. Zaira DiazChula Vista, CA 919141972077659
  41. Griselda Diaz -LopezMadera, CA 936381649861311
  42. Jose Diaz De LeonAlhambra, CA 918031588237911
  43. Judith Diaz SierraWalnut Creek, CA 945981891394151
  44. Paola Diaz-GarruchoDublin, CA 945681639647175
  45. Efren Diaz-MoraIndio, CA 922011053122705
  46. Alan Diaz-RamirezSanta Maria, CA 934541285288118
  47. Cindy Diaz-SerratoConcord, CA 945201366360315
  48. Dina DibOntario, CA 917611851113369
  49. Khloe DibiaseCarlsbad, CA 920081467919407
  50. Isabella DicaroLos Angeles, CA 900431609635812

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.

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.