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 260 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. Sareen NersisStudio City, CA 916041922432160
  2. Nelly Nersisyan, BAPasadena, CA 911031295021301
  3. Cameron NesbittGardena, CA 902481356729875
  4. Rebeca Nesicolaci, BCBAWalnut Creek, CA 945961780070615
  5. Rachel NessimCosta Mesa, CA 926261780339192
  6. Amy NesterBakersfield, CA 933091922574664
  7. Kathleen NesticoSan Jose, CA 951281689259913
  8. Lola NetroChula Vista, CA 919141992317663
  9. Elizabeth NettletonCosta Mesa, CA 926261801509823
  10. Stefanie Neuberger, M.A.Richmond, CA 948041518381003
  11. Kaitlyn Neumann, BCBAPlacerville, CA 956671790141240
  12. Madison NeumannMarina, CA 939331255942199
  13. Dessah NevarezSherman Oaks, CA 914031023640208
  14. Jasmine NevarezWoodland Hills, CA 913671992344311
  15. Sandra Nevarez MunguiaLos Angeles, CA 900111073099057
  16. Yelena Nevarez-Arias, BCBAEncino, CA 913161952138497
  17. Jazmyn NeversonWoodland Hills, CA 913671811494321
  18. Shawnnay NevesPetaluma, CA 949521538623509
  19. Natasha NevilleWoodland Hills, CA 913671881161172
  20. Tarajajamila NewberrryEncino, CA 914361629926951
  21. Brett NewbyCovina, CA 917241578067658
  22. Brianna NewcomerSacramento, CA 958341063904928
  23. Mykael NewellOntario, CA 917641720796899
  24. Natalie NewkirkWildomar, CA 925951912876624
  25. Cody NewmanValencia, CA 913551861131310
  26. Elise NewmanSan Jose, CA 951121770084196
  27. Valerie NewsomHesperia, CA 923451578080032
  28. Shaleda NewsonWoodland Hills, CA 913671730668724
  29. Lorriane NewtonVisalia, CA 932771831694538
  30. Melissa NewtonElk Grove, CA 956241295237550
  31. Rachel Newton, MSSan Diego, CA 921271346639754
  32. Carolyn Newtson, M.A., BCBASan Diego, CA 921231679122568
  33. Emily Ng, BCBASanta Ana, CA 927041710487327
  34. Joseph Ng, MASan Francisco, CA 941181992170096
  35. Merrisa NgOakland, CA 946061346786332
  36. Serena NgimCosta Mesa, CA 926261619545910
  37. Nadtine Ngnibogha DongmezaLos Angeles, CA 900431497624282
  38. Ambrose Loc Ngo, AANorthridge, CA 913241811467434
  39. Ethan NgoCosta Mesa, CA 926261477398261
  40. Hong Uyen Ngo, BCBADowney, CA 902421194229963
  41. Kim Ngo, M.S., BCBAMenlo Park, CA 940251528562394
  42. Mariann NgoEl Segundo, CA 902451639097298
  43. Melissa NgoMarina, CA 939331922582329
  44. Nhu-Hoang Tyler NgoCosta Mesa, CA 926261780407460
  45. Steven NgoSan Diego, CA 921231376026583
  46. Han NguySanta Ana, CA 927041982267209
  47. Alexandre Nguyen, BCBAOxnard, CA 930301811557192
  48. Alexey NguyenGardena, CA 902481790419729
  49. Amanda Nguyen, M.S., BCBACulver City, CA 902301275251688
  50. Amy NguyenSan Diego, CA 921081811864036

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.