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 99 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. Shayla Duda, BCBADublin, CA 945681700443868
  2. Casey Dudley, MS/BCBAWalnut Creek, CA 945961487918207
  3. Jzane DudleyHemet, CA 925441790524460
  4. Elizabeth DudziakCosta Mesa, CA 926261538901798
  5. Alejandro DuenasHayward, CA 945411144716317
  6. Ana Duenas, MA, BCBASan Diego, CA 921161114356433
  7. Elizabeth DuenasRocklin, CA 956771659873933
  8. Michael Duenas, MS, BCBASanta Maria, CA 934541811410087
  9. Victoria DuenasDanville, CA 945261770089534
  10. Joel Dufault, BCBASan Diego, CA 921011285122556
  11. Christopher Duff, BCBAOakland, CA 946091346758364
  12. Maliah DuffinLos Angeles, CA 900431134927536
  13. Andrea DuffyOakland, CA 946061689178261
  14. Jennifer DuffyWoodland Hills, CA 913671255940755
  15. Michael DuffySan Diego, CA 921261194966911
  16. Andrew DufortSanta Ana, CA 927051003489667
  17. Kaitlin DuganCanoga Park, CA 913031649891698
  18. Arielle DuinkerkenOntario, CA 917641073989190
  19. Alexis DukeCosta Mesa, CA 926261669202503
  20. Shaun DukesLong Beach, CA 908021962861617
  21. Omar Angelo DulaLa Verne, CA 917501104227503
  22. Naliyah DulanSan Leandro, CA 945771720611874
  23. Sharen DumasSalida, CA 953681871096511
  24. Jonelle DumayasMonrovia, CA 910161710126339
  25. Victoria DunaganApple Valley, CA 923071861132425
  26. Ashley DunbarGarden Grove, CA 928401639417470
  27. Erin DuncanOntario, CA 917641861239683
  28. Grant Duncan, MA, BCBARichmond, CA 948041831987098
  29. Jessica Duncan, BCBAManteca, CA 953371396202164
  30. Jordan DuncanSacramento, CA 958261689146979
  31. Joseph Duncan, BCBA, LBAConcord, CA 945201194339606
  32. Kimar DuncanCovina, CA 917241851147557
  33. Shannon Duncan, BCBAThousand Oaks, CA 913601629370630
  34. Taylor DuncanSan Jose, CA 951281174103089
  35. Danielle DunhamOakland, CA 946061326524240
  36. Jordan Dunham, M.A., BCBACosta Mesa, CA 926261740733757
  37. Megan DunlapDavis, CA 956181679067227
  38. Whitney Dunlap TolliverRichmond, CA 948041811479884
  39. Alyssa DunlopOakland, CA 946061689106361
  40. Carina Dunmore, BCABAFresno, CA 937271891034591
  41. Kathleena DunmoreSacramento, CA 958251477023075
  42. Jenny Dunn, BCABARoseville, CA 956611326444944
  43. Sarah Dunn, BCBAStudio City, CA 916041619483815
  44. Marcus DunnickStanton, CA 906801477119147
  45. Robert DunstWestlake Village, CA 913611013537158
  46. Jaleen DunstonNorthridge, CA 913241255972055
  47. Lee DuntemanSan Diego, CA 921081518894252
  48. Janelle DunvilleSan Dimas, CA 917731447815386
  49. Alan DuongWest Covina, CA 917901528644945
  50. Celina Duong, BCBAOntario, CA 917641417520842

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.