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 263 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. Tiffany Nguyen, BCBASan Leandro, CA 945771598130650
  2. Tony NguyenRosemead, CA 917701285498337
  3. Tony Nguyen, MS, BCBASan Diego, CA 921081144780305
  4. Tracey Nguyen, BEHAVIOR ANALYSTSanta Ana, CA 927051851759369
  5. Tracy NguyenCosta Mesa, CA 926261194374298
  6. Tracy NguyenAnaheim, CA 928051053886002
  7. Tram Nguyen, MA, BCBASan Jose, CA 951281013558584
  8. Vicky NguyenWoodland Hills, CA 913671164062121
  9. Victoria NguyenSan Jose, CA 951191811661309
  10. Viet Nguyen, BCBAOrange, CA 928681043761430
  11. Vivian NguyenGarden Grove, CA 928451306494984
  12. Cristian Nguyen GallardoCosta Mesa, CA 926261093527061
  13. Katrina Nhan, BCBAMonrovia, CA 910161962053678
  14. Elia NhongSan Diego, CA 921281477927549
  15. Carlene NhuCosta Mesa, CA 926261962290072
  16. Mariam NiazAlameda, CA 945011467911867
  17. Lori Nice, M.S., BCBAModesto, CA 953551700289816
  18. Kelani NicholasTorrance, CA 905051942965942
  19. Christine NichollsSan Diego, CA 921231518651405
  20. April NicholsDiamond Bar, CA 917651912412149
  21. Kacey Nichols, M.A., BCBARedding, CA 960011891202461
  22. Katherine Nichols, BCBAChatsworth, CA 913111972040368
  23. Stephanie NicholsEncino, CA 913161801561006
  24. Talula NicholsWoodland Hills, CA 913671063133650
  25. Andrea Nicholson, MFCIrvine, CA 926061558639120
  26. Dana NicholsonGarden Grove, CA 928401700386844
  27. Kathleen NicholsonLos Angeles, CA 900481588100655
  28. Laila Nicholson, BCBAGardena, CA 902481689414666
  29. Crystal Nicholson-Brain, MA, BCBAAnaheim, CA 928051831506617
  30. Emily Nickel, BCABAMonrovia, CA 910161003377300
  31. Jordan Nickelson-SmithSan Francisco, CA 941241932990488
  32. Kyley NicklasOrange, CA 928681134698954
  33. Jessica NicolosiSan Diego, CA 921011487057451
  34. Amanda Nicolson, PHDFresno, CA 937261386991842
  35. Samuel Niebla, M.S., BCBASacramento, CA 958161215567029
  36. Kelsey NielsenSan Diego, CA 921031407329493
  37. Shelby NielsenVista, CA 920811760217947
  38. Janis Niemann, M.S., BCBAGarden Grove, CA 928401427314236
  39. Erica NiemiLafayette, CA 945491295139277
  40. David NieminskiWildomar, CA 925951215891627
  41. Danielle Nieto, RBTSacramento, CA 958151215438361
  42. Karina NietoOntario, CA 917641821515255
  43. Paola NietoFresno, CA 937111467000224
  44. Elizabeth NievaRancho Cucamonga, CA 917301487156113
  45. Eleuteria NievesPerris, CA 925711831669829
  46. Maria NievesSanta Cruz, CA 950621669243374
  47. Andrea NightingaleCosta Mesa, CA 926261316770589
  48. Sanaa NikelsonVictorville, CA 923921881473452
  49. Lisa NikiforukRancho Cucamonga, CA 917301932635273
  50. Conrad NikitinSalinas, CA 939011619648821

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.