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 262 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. Joelle NguyenWildomar, CA 925951235062084
  2. Jonalyn NguyenFullerton, CA 928321275901993
  3. Josie Nguyen, MA, BCBANewport Beach, CA 926601205446465
  4. Julie NguyenStanton, CA 906801467916833
  5. Julie NguyenChula Vista, CA 919101104324748
  6. Katherine NguyenSan Mateo, CA 944011588122360
  7. Kathy NguyenCosta Mesa, CA 926261982390977
  8. Kathy NguyenRancho Cordova, CA 956701982578084
  9. Kenny NguyenRosemead, CA 917701023820008
  10. Kevin NguyenSanta Clara, CA 950541093319741
  11. Khang Nguyen, BCBAGarden Grove, CA 928411821332461
  12. Khanh Nguyen, BCBANewport Beach, CA 926601093278046
  13. Khoa NguyenCupertino, CA 950141184108839
  14. Lethuy Nguyen, BCBACosta Mesa, CA 926261457852089
  15. Linda NguyenGarden Grove, CA 928411942697818
  16. Lindsay Nguyen, BCBAOrange, CA 928681669867875
  17. Lisa NguyenCosta Mesa, CA 926261952116162
  18. Madelene NguyenIrvine, CA 926061871053496
  19. Megan NguyenCosta Mesa, CA 926261063398907
  20. Melanie Nguyen, BCBAAlhambra, CA 918011134505191
  21. Michael Nguyen, MS, BCBAOntario, CA 917611245755248
  22. Michael NguyenOntario, CA 917641083209795
  23. Minh-Tuyet NguyenSan Diego, CA 921081962154724
  24. My Hanh Nguyen, BCBASan Jose, CA 951271184132573
  25. Myhanh Nguyen, BCBAWhittier, CA 906051962092163
  26. Ngocanh Nguyen, M.A., BCBAFountain Valley, CA 927081215325626
  27. Nguyen NguyenCupertino, CA 950141790318251
  28. Nhi Nguyen, BCBAWest Covina, CA 917901740778273
  29. Nhi Nguyen, BCBAHuntington Beach, CA 926471306389440
  30. Nhi NguyenAnaheim, CA 928051366917171
  31. Nhung NguyenRiverside, CA 925031518524677
  32. Nikki NguyenSanata Ana, CA 927011922485903
  33. Phi Oanh Nguyen, BCBANewport Beach, CA 926601023583382
  34. Philip Nguyen, BCBARancho Cucamonga, CA 917301487482337
  35. Philip NguyenFountain Valley, CA 927081720542194
  36. Phuocai Nguyen, M.A.San Jose, CA 951111467843920
  37. Quang NguyenHuntington Beach, CA 926491992340632
  38. Quynh Nguyen, M.A, BCBAFountain Valley, CA 927081740539659
  39. Quynh Nguyen, BCBAMountain View, CA 940431427421171
  40. Quynh Nguyen, M.EDCampbell, CA 950081841668555
  41. Sophia NguyenCosta Mesa, CA 926261235637364
  42. Sophie NguyenTorrance, CA 905031043850001
  43. Steven NguyenCosta Mesa, CA 926261699357061
  44. Summer NguyenOrange, CA 928681982164513
  45. Sylvia Nguyen, BCBASan Diego, CA 921231336634971
  46. Tammy NguyenCosta Mesa, CA 926261386124360
  47. Tammy NguyenCosta Mesa, CA 926261770257313
  48. Thi NguyenSan Jose, CA 951271508256538
  49. Tho NguyenPleasanton, CA 945881043787427
  50. Thy NguyenAlameda, CA 945011790332120

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.