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 374 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. Brandon Osypiewski, R1580100924San Leandro, CA 945781518786177
  2. Anthony OtegbuluLawndale, CA 902601043975717
  3. Cathy OteroChula Vista, CA 919111841655073
  4. Jonathan OteroUpland, CA 917861609288042
  5. Susan OteroUpland, CA 917861831222652
  6. Cristian OteySanta Barbara, CA 931011356988976
  7. Claudia Otis, BA, CATC IIIAnaheim, CA 928061710312590
  8. Dana Otis, CAARRAntioch, CA 945091053451740
  9. Patricia OtsujiLaguna Hills, CA 926531487110466
  10. Patricia OttWoodland Hills, CA 913671053949131
  11. Richard Ott, RASISanta Rosa, CA 954091750695060
  12. Amy OttenMarina, CA 939331588202246
  13. Robert Otten, LAADC, M-RAS, CSCSan Luis Obispo, CA 934011447387345
  14. Cindy OtternessTruckee, CA 961611235351933
  15. Misty OttingPomona, CA 917681487226015
  16. Michelle OttsLodi, CA 952421336526045
  17. Sara OuaddiAltadena, CA 910011659024636
  18. Matthew OuelletteTustin, CA 927801841981800
  19. Erika OuilletteSanta Monica, CA 904051376417188
  20. Caroline OuimetEl Cajon, CA 920201326828708
  21. Alice OuzenianBurbank, CA 915041174250682
  22. Emily OvengoSacramento, CA 958241366686990
  23. Lisa OverholtEureka, CA 955011871039974
  24. Christa OvertonLemon Grove, CA 919451689193666
  25. David Overton, C059110818Chico, CA 959731104672922
  26. Jeff OvertonOrange, CA 928681356129225
  27. Davidson Owan, MSCPLoma Linda, CA 923571609229632
  28. Donald Owen, CATC-I 5543Huntington Beach, CA 926481861946485
  29. Lauren Owen, SUDCCSan Diego, CA 921081679137020
  30. Randy OwenSacramento, CA 958111891008231
  31. Sarah Owen, MAOrange, CA 928681871837427
  32. Carlos OwensBakersfield, CA 933041134008980
  33. Charles Owens, CAARREscondido, CA 920251568640142
  34. Donald Owens, CATC-ISan Diego, CA 921051942822341
  35. Elisa OwensLos Angeles, CA 900081013150937
  36. James OwensVista, CA 920831104395102
  37. Janelle OwensHemet, CA 925431801660535
  38. Jason OwensSan Bernardino, CA 924101265856918
  39. Maria OwensOakland, CA 946021437390937
  40. Meghan OwensFresno, CA 937261144042292
  41. Patricia OwensUpland, CA 917861952593089
  42. Rebecca OwensSanta Rosa, CA 954031568749653
  43. Russell OwensLemon Grove, CA 919451770268260
  44. Shari OwensPanorama City, CA 914021063950095
  45. Terri OwensSanta Maria, CA 934541043722671
  46. Theodore OwensLancaster, CA 935341447902507
  47. Trisha OwensRedding, CA 960021922404599
  48. Wilkens OwensSacramento, CA 958161588490619
  49. Regina Owens-DurantLos Angeles, CA 900571851941090
  50. Trent OwingsPaso Robles, CA 934461518460559

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.