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 280 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. Brenda LeonCovina, CA 917231649405036
  2. Briana Leon, RADTVan Nuys, CA 914111598563975
  3. Carlos Leon, SUDCC IIFairfield, CA 945341790404382
  4. Eduardo LeonNapa, CA 945581194305870
  5. Jessica LeonLos Angeles, CA 900321669854279
  6. Juvenal LeonLemoore, CA 932451447941935
  7. Laniece LeonChula Vista, CA 919111558014522
  8. Michaela LeonVista, CA 920831275190480
  9. Norberto LeonSan Bernardino, CA 924081679419899
  10. Nydia LeonLos Angeles, CA 900431811595788
  11. Patricia LeonFresno, CA 937261255290367
  12. Paula LeonModesto, CA 953511952026098
  13. Ricardo LeonLos Angeles, CA 900291871273243
  14. Susan Leon, RAS, SACIIStockton, CA 952021609998780
  15. Zujhei LeonSan Diego, CA 921051457602724
  16. Ceci Leon De CalhounSacramento, CA 958111932636032
  17. Sylvia Leon-Nunez, CAARRClovis, CA 936121821281445
  18. Christy LeonardSan Diego, CA 921131881417087
  19. Kasey LeonardLos Angeles, CA 900421891385373
  20. Susan Leonard, MFTSan Rafael, CA 949031497828818
  21. Darren Leonardo, CASMerced, CA 953401770913485
  22. Shaunae LeonardoModesto, CA 953501750103412
  23. Cassandra LeoneSan Diego, CA 921231487454922
  24. Jenifer Leonesio, CADC IISacramento, CA 958111235604604
  25. Dorothy LeongSan Francisco, CA 941031831608926
  26. Veronica LeonorSanta Cruz, CA 950621447873989
  27. Inna LeonovaVan Nuys, CA 914111376878355
  28. Krista LeontieffSanta Cruz, CA 950601124431234
  29. Brandi Leos, SUDCCIIMadera, CA 936391932574225
  30. Elena LepeSun Valley, CA 913521366009029
  31. Marquessa LepeSan Marcos, CA 920691447963731
  32. Evangelina Lepe PenaLos Angeles, CA 900571073364238
  33. William Leppert, MA, RASIWoodland, CA 956951861671133
  34. Natalie Lercari-SullivanSanta Barbara, CA 931101871440727
  35. Alicia LermaSimi Valley, CA 930651780088872
  36. Monica Lerma, MSW, MPH, CATC IVCommerce, CA 900401982570230
  37. Patrick LermaLos Angeles, CA 900571366131823
  38. Ari LermanLos Angeles, CA 900341093605958
  39. Aaron LernerSan Diego, CA 921051215412531
  40. Nicki LerouxChico, CA 959261407490873
  41. Christopher LesebergAtascadero, CA 934221811691140
  42. Ersdale LesesneLemon Grove, CA 919451356971337
  43. Diana Lessley, RADTNapa, CA 945581689337933
  44. Bradley LesterDesert Hot Springs, CA 922401679946065
  45. Donna LesterYuba City, CA 959911134258114
  46. Eric Lester, RADTGrass Valley, CA 959451396271144
  47. Misty LethbridgePalmdale, CA 935501467321935
  48. Julliette LettLos Angeles, CA 900211215162904
  49. Deborah Lettau, SUDCC II 17875Lancaster, CA 935341710806419
  50. Cora LeungVallejo, CA 945901760907026

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.