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 369 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. Sara Olivera, LPTAtascadero, CA 934221629128335
  2. Elizabeth OliverosLos Angeles, CA 900041578212932
  3. Austin OlivoSacramento, CA 958411063963114
  4. Amee OllivaresLos Angeles, CA 900191154868164
  5. Jimmy OlmedoPasadena, CA 911031073463295
  6. Sarah Olmedo, CADC ISan Diego, CA 921021326521402
  7. Steve OlmoFresno, CA 937281659597292
  8. Celeste OlmosRichmond, CA 948041376389403
  9. Ricardo OlmosStockton, CA 952191649457201
  10. Rodolfo Olmos, CADC IIVan Nuys, CA 914111447688429
  11. Julian Olmos-GalloLake View Terrace, CA 913421205307964
  12. Charleen OlmsteadSacramento, CA 958411386009611
  13. Sunday Olowookere, SUDCC, CADC, MBAApple Valley, CA 923071336994532
  14. Shannon OlsemSacramento, CA 958231598082471
  15. Adam OlsenVentura, CA 930011053195719
  16. Alison Olsen, LADCGrass Valley, CA 959451801017280
  17. Beth OlsenVista, CA 920831619624988
  18. Jami OlsenSanta Barbara, CA 931011417517319
  19. Keith OlsenSanta Rosa, CA 954011578782199
  20. Mason Olshever, RADTLos Angeles, CA 900361710546643
  21. Andrea Olson, M.S. CCC-SLPBerkeley, CA 947041225377310
  22. Barry Olson Olson, BSSanta Clarita, CA 913211023411774
  23. Chad OlsonStockton, CA 952031952679672
  24. Christine Olson, RADT1Visalia, CA 932911629574041
  25. Donald OlsonLake Elsinore, CA 925301730498247
  26. Edward OlsonTarzana, CA 913561437722741
  27. Eric Olson, SUDCC IIBakersfield, CA 933011427101690
  28. Greg Olson, RRWFresno, CA 937111003248584
  29. Gregory OlsonSan Diego, CA 921151942763206
  30. Jennifer OlsonOakland, CA 946031912367376
  31. Melissa OlsonSanta Barbara, CA 931101518105147
  32. Rhonda OlsonAuburn, CA 956021225713969
  33. Vanessa OlsonVista, CA 920841265080642
  34. Wayne Olson, M.A.Santa Barbara, CA 931101962951053
  35. William OlsonConcord, CA 945201104405976
  36. Oluwakemi OludimuLos Angeles, CA 900431952299240
  37. Nathalie OlvedaSanger, CA 936571437425006
  38. Bryan OlveraAltadena, CA 910011285450643
  39. Francys Olvera, SUDRCSan Rafael, CA 949011730834011
  40. Maria OlveraLos Angeles, CA 900051043338049
  41. Melody OlveraCanoga Park, CA 913041699286534
  42. Rocio OlveraBakersfield, CA 933071194211102
  43. Stephani OmalevDesert Hot Springs, CA 922401538823257
  44. Payden OmanDesert Hot Springs, CA 922401306520507
  45. Donna Omo, IMFTNevada City, CA 959591639399926
  46. Orlando OmoruyiLos Angeles, CA 900441912192246
  47. Dalia OmraniSanta Monica, CA 904051700432820
  48. Jacob OneillPasadena, CA 911031790633709
  49. Marissa Oneill, CAPDTSan Francisco, CA 941101649110255
  50. Craig Oney, CAADE - 4166-IOrange, CA 928681679920722

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.