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 307 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. Jose MarquezLos Angeles, CA 900221609669159
  2. Jose MarquezLong Beach, CA 908041083503643
  3. Krystal MarquezLos Angeles, CA 900131447018536
  4. Leia MarquezOakland, CA 946091225351588
  5. Liza Marquez, CACD-IModesto, CA 953501083371074
  6. Mark MarquezChula Vista, CA 919101255757316
  7. Michael Marquez, CADAC IIIndio, CA 922011629787718
  8. Mike MarquezVisalia, CA 932771003946880
  9. Monique MarquezEl Cajon, CA 920201942783444
  10. Pamela MarquezSacramento, CA 958231487058269
  11. Paul MarquezSan Jose, CA 951191801685755
  12. Richard MarquezTarzana, CA 913561154908911
  13. Rita MarquezLong Beach, CA 908151396958435
  14. Roman Marquez, RADTSalinas, CA 939011699290866
  15. Sophia Marquez, CADT-CASFresno, CA 937061952825507
  16. Summerlynn MarquezFresno, CA 937061184209116
  17. Trina MarquezPomona, CA 917671588023063
  18. Matilda Marquez De Woodard, CADTP 16441Fresno, CA 937061245000827
  19. Jennae MarraChula Vista, CA 919111821273947
  20. David MarreroFair Oaks, CA 956281811868953
  21. Anna MarriottFontana, CA 923351124440490
  22. Robert Marriott, RADT IFresno, CA 937281922467810
  23. Alejandro Marron, CADC IIBrawley, CA 922271023547312
  24. Jose Luis MarronAnaheim, CA 928051063041895
  25. David MarroquinLos Angeles, CA 900031568979607
  26. Elsie MarroquinModesto, CA 953541306027859
  27. Nicole MarroquinFresno, CA 937271295289585
  28. Rebecca MarroquinBanning, CA 922201578273652
  29. Joseph MarruffoDesert Hot Springs, CA 922401154795540
  30. Aleecia Marrufo, RADTClovis, CA 936111629889035
  31. Naty MarrufoSalinas, CA 939011780241711
  32. Tina MarrufoSan Bernardino, CA 924101265952394
  33. Ralph Marrujo, CDACCSanta Ana, CA 927011336410380
  34. Elona Marrus, MA, LMFTBerkeley, CA 947041396084547
  35. Yesenia MarsalaOakland, CA 946011609041540
  36. Jennifer Marsano, M.A.Santa Maria, CA 934541730377466
  37. Giles MarsdenLos Angeles, CA 900681336016864
  38. Kathleen MarseguerraSalinas, CA 939011609153063
  39. Stephanie Marsh, NONECorona, CA 928801174661474
  40. Ammie MarshallLancaster, CA 935341467608992
  41. Aylia MarshallSacramento, CA 958251134728215
  42. Cartier MarshallFresno, CA 937111518207174
  43. Christine MarshallSonora, CA 953701548532781
  44. Clinton MarshallStockton, CA 952031336411701
  45. Colleen MarshallFremont, CA 945361326216573
  46. Denise MarshallLos Angeles, CA 900481366639924
  47. Emily MarshallFresno, CA 937061437838943
  48. Geneva MarshallBakersfield, CA 933091518270529
  49. Hoyt MarshallSan Bernardino, CA 924051225501729
  50. Jasmine MarshallOceanside, CA 920571831816347

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.