NPPES file of Aug 9, 2026

Addiction (Substance Use Disorder) Counselor in California

27,741 NPPES records list addiction (substance use disorder) counselor with a practice address in California, 71 per 100,000 residents, the 4th highest rate of 51. Los Angeles and Fresno have the most; each record links to the provider's NPI and the California license search. Page 421 of 555.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 101YA0400X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Los Angeles has the most, 2,101

  1. Los Angeles2,101
  2. Fresno1,231
  3. Sacramento1,187
  4. San Diego1,015
  5. San Francisco839

Addiction (Substance Use Disorder) Counselor records in California

  1. John RivasSan Francisco, CA 941101679850176
  2. Johnny RivasLos Angeles, CA 900221932435773
  3. Judy RivasStanton, CA 906801558577262
  4. Karen RivasSan Diego, CA 921151013691187
  5. Leonel RivasLake View Terrace, CA 913421568746352
  6. Luis Rivas, RADT 1Concord, CA 945201821916370
  7. Melyssa RivasDowney, CA 902411639722978
  8. Mercedes RivasTarzana, CA 913561922799477
  9. Natalia Rivas, CADDESan Diego, CA 921541023210820
  10. Patricia RivasVenice, CA 902911003218660
  11. Roberto Rivas, CADC-CASNapa, CA 945581932405669
  12. Rodolfo RivasVan Nuys, CA 914111518235837
  13. Victor Rivas, RADTIPasadena, CA 911011659123305
  14. Liliana Rivas Carr, RADTSanta Cruz, CA 950621881259828
  15. Jake Rivas-DukeAntioch, CA 945091619317435
  16. Maria Rivas-MichelLos Angeles, CA 900291285426049
  17. Adrian RiveraLincoln Heights, CA 900311699552919
  18. Aliza RiveraLos Angeles, CA 900571538651328
  19. Alvin RiveraLancaster, CA 935341760045850
  20. Amelia RiveraDelano, CA 932151447380035
  21. Andrea RiveraFowler, CA 936251578203279
  22. Anna RiveraLemon Grove, CA 919451447554993
  23. Danniel RiveraLong Beach, CA 908061740764067
  24. David RiveraModesto, CA 953511649736208
  25. Declan RiveraRedwood City, CA 940631982283750
  26. Desmond RiveraSan Francisco, CA 941221851758411
  27. Edgar RiveraIndio, CA 922011134581002
  28. Edwin RiveraPasadena, CA 911031912837378
  29. Eliezel RiveraLong Beach, CA 908071013700210
  30. Eric RiveraRiverside, CA 925061588250872
  31. Frances RiveraModesto, CA 953501588103402
  32. Frank RiveraPasadena, CA 911011598074346
  33. Frank RiveraSan Bernardino, CA 924081215547229
  34. Gregory Rivera, SUDRCVisalia, CA 932771790391266
  35. Jasmine RiveraBloomington, CA 923161245064369
  36. Jeanice RiveraNorthridge, CA 913251437832144
  37. John RiveraOxnard, CA 930361871762187
  38. Joseph RiveraVictorville, CA 923921073047940
  39. Julie RiveraVentura, CA 930011902569791
  40. Kristi RiveraLong Beach, CA 908051417793100
  41. Linda RiveraSan Bernardino, CA 924101710639745
  42. Maria RiveraSacramento, CA 958411114310547
  43. Maryory Rivera, R1488451122Los Angeles, CA 900571568171015
  44. Matilde RiveraMontebello, CA 906401497971683
  45. Mayra RiveraCoachella, CA 922361750173589
  46. Mayra RiveraBakersfield, CA 933091477489581
  47. Nadya RiveraOceanside, CA 920581730714841
  48. Nancy RiveraFremont, CA 945361215148572
  49. Noemi RiveraLos Angeles, CA 900291114738283
  50. Oscar RiveraSan Bruno, CA 940661417824376

Source: CMS NPPES, primary taxonomy 101YA0400X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 4 of 51 per resident

  1. Alaska135
  2. Ohio95
  3. Oregon95
  4. California71
  5. Maine61
  6. Montana61
  7. 50 states and D.C.28

Source: CMS NPPES, primary taxonomy 101YA0400X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

0.1% of these records appear in a Medicare file, against 1.0% 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. California0.1%
  2. United States1.0%

Addiction (Substance Use Disorder) Counselor records in California, measured

  • In a Medicare file26 of 27,741 · 0.1% here, 1.0% nationally
  • In the CMS Doctors and Clinicians file32 · 0.1% here, 1.7% nationally
  • Not updated in five years or more16,340 · 58.9% here, 57.4% nationally
  • Median graduation year2015 · the 32 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 101YA0400X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

27,741 NPPES records list addiction (substance use disorder) counselor (101YA0400X) as their primary taxonomy with a practice address in California: 71 per 100,000 residents against 28 nationally (50 states and D.C.). Los Angeles has 2,101 of them (8%).

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. Ohio11,255
  2. New York5,180
  3. Washington4,416
  4. Oregon4,037

States with a similar rate per 100,000

  1. Maine61.3
  2. Montana61.0
  3. North Dakota56.8
  4. Rhode Island51.1

The largest states

  1. Ohio11,255
  2. New York5,180
  3. Washington4,416
  4. Oregon4,037
  5. North Carolina3,066

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.