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 392 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. Rachel WebsterVacaville, CA 956871083178362
  2. Victoria WebsterSan Diego, CA 921231629640073
  3. Nicole Wechsung, BCBASeal Beach, CA 907401831606854
  4. Kelly Wedberg, BCBABishop, CA 935141306257654
  5. Renee Wedell, BCBASan Francisco, CA 941041184281289
  6. Michelle WeeksStockton, CA 952071326786195
  7. Loryn WeerSan Francisco, CA 941041912575275
  8. Lara WehbiAnaheim, CA 928041104335538
  9. Natahlia WehrliTustin, CA 927801477370138
  10. Misty Wei, BCBATustin, CA 927821902462740
  11. Vivian WeiCosta Mesa, CA 926261235932542
  12. Laura Weigel, BCBAWest Sacramento, CA 956911528457819
  13. Andrew WeiherWalnut Creek, CA 945961356739270
  14. Kimberly WeihertHanford, CA 932301447845771
  15. Laura Weil, BCBA-DGardena, CA 902481548761273
  16. Ashley WeinfurterCosta Mesa, CA 926261346952983
  17. Anneli Weingand, BCBAValencia, CA 913551861997363
  18. Sara Weinkauf, PHDAliso Viejo, CA 926561689983033
  19. Natalie WeinmeisterSan Ramon, CA 945831831555317
  20. Austin Weir, M.A., BCBALafayette, CA 945491285125815
  21. Jade Weir, BCBASeal Beach, CA 907401194351148
  22. Sarah Weir, BCBABakersfield, CA 933091548728405
  23. Daniel WeissCosta Mesa, CA 926261396404620
  24. Tristan WeissEl Segundo, CA 902451568380822
  25. Laura Weissenberg-Dickerson, M.A., BCBACosta Mesa, CA 926261770973356
  26. Marnie WeitzmanLos Angeles, CA 900101396906632
  27. Brittney WelchWoodland Hills, CA 913671396352811
  28. Lauren WelchNewark, CA 945601487548459
  29. Suyeily Welch, RBTSan Diego, CA 921081316303472
  30. Asia Welch-SeatonSan Jacinto, CA 925821104480722
  31. Camille WeldonOntario, CA 917641558714964
  32. Natalie WellesWoodland Hills, CA 913671780351189
  33. Keisha WellingtonVictorville, CA 923921285975672
  34. Ariel Wells, BCBAValley Village, CA 916071669970554
  35. Felisha WellsWoodland Hills, CA 913671912541004
  36. Heather Wells, BCBASan Diego, CA 921031952645699
  37. Sheritta Wells, BCBARancho Cucamonga, CA 917301093258287
  38. Sophia WellsCosta Mesa, CA 926261033996699
  39. Tasia Wells, BCBAThousand Oaks, CA 913601013336692
  40. Tiffany WellsWalnut Park, CA 902551467910356
  41. Vicki Wells, M.A.Oakland, CA 946021407167281
  42. Cheyenne Wells-JordanWoodland Hills, CA 913671902614530
  43. Maria Welsh, BCBASherman Oaks, CA 914231124452719
  44. Xiaofan WenSan Francisco, CA 941321124504162
  45. Bryan WendelbergerSacramento, CA 958411790053221
  46. Joel Wenell, MA, BCBASacramento, CA 958271417422890
  47. Claudia Wenger, BCBATarzana, CA 913561396378253
  48. Susan WengrofskyOakland, CA 946121912315334
  49. Mary WeningerSacramento, CA 958271053789966
  50. Nicole Wentz, BCBASan Jose, CA 951191003587221

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.