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 332 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. Mikael MerencioHawthorne, CA 902501871001792
  2. Sheila MeridethSacramento, CA 958161306039821
  3. Lynne MeridithMadera, CA 936371760608939
  4. Rosa MeriosOakland, CA 946721639345689
  5. Aide Merito-Pina,Santa Ana, CA 927011033694062
  6. Jaclyn MerkFresno, CA 937261922461771
  7. James Merkel, CADC IIBanning, CA 922201780217901
  8. Susan Merlino, CADCBurbank, CA 915061366204315
  9. Armando MerlosSylmar, CA 913421700054905
  10. Katherine MeroStockton, CA 952051316069495
  11. Jennifer Merrell, CADACLLNapa, CA 945591245569417
  12. Donald MerriamSacramento, CA 958411952763724
  13. Mariah MerriamVista, CA 920831881428381
  14. Joan MerrillAnaheim, CA 928051194989939
  15. Judith MerrillLancaster, CA 935341053872325
  16. Jason MerrittLos Angeles, CA 900041447193263
  17. Ronald Merritt, RADT 1Chula Vista, CA 919101639964059
  18. Shavonda MerrittTarzana, CA 913561174251631
  19. Melissa MerriweatherWest Hollywood, CA 900691619442506
  20. Tanisha MerriweatherLos Angeles, CA 900181881085942
  21. Sioban MersaroliStockton, CA 952041639669070
  22. Jennifer Mertell, CADC-1Sun Valley, CA 913521336642362
  23. Cindy MesaBakersfield, CA 933041629129028
  24. Frank MesaTaft, CA 932681225202054
  25. Roger MesaRiverside, CA 925011164938189
  26. Kevin MescherLaguna Hills, CA 926531699602011
  27. Rebecca MeschonRiverside, CA 925071043475015
  28. Rhonda Mesenbrink, CADA11Modesto, CA 953581851422653
  29. Carl MesmerMorro Bay, CA 934421285440644
  30. Mark Messerer, SUDCCMartinez, CA 945531790841682
  31. Sandra MessingerRiverside, CA 925061649398520
  32. Thomas Messner, CASAntioch, CA 945091619144250
  33. Manuel MestasSanta Maria, CA 934541073329579
  34. Yoko MestasLancaster, CA 935341275125940
  35. Cosette MestayerSan Francisco, CA 941241346559960
  36. Billy MetajanHawaiian Gardens, CA 907161598625428
  37. Thomas Metcalf, LCSWYuba City, CA 959911477695062
  38. Adrienne MetivierFremont, CA 945361144481227
  39. Dominic Metoyer, RRWLong Beach, CA 908041124247630
  40. Victor Mettler, CAADACGarden Grove, CA 928401043577273
  41. Dave MettsAntioch, CA 945091093991283
  42. Deanna Meyer, LMFTRoseville, CA 956611255529657
  43. Jacqueline MeyerWoodland Hills, CA 913671578214599
  44. Jeffrey MeyerSan Francisco, CA 941031821278920
  45. Joni MeyerChico, CA 959261659676484
  46. Kathryn Meyer, LAADCSan Diego, CA 921211629526561
  47. Kelly Meyer, CASSan Luis Obispo, CA 934011477087518
  48. Scott Meyer, RI-M0909081620Kelseyville, CA 954511679807986
  49. William Meyer, RASEl Cajon, CA 920201396948360
  50. Deborah MeyersSylmar, CA 913421366679474

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.