NPPES file of Aug 9, 2026

Addiction (Substance Use Disorder) Psychologist in California

103 NPPES records list addiction (substance use disorder) psychologist with a practice address in California, 0.3 per 100,000 residents, the 11th highest rate of 47. San Diego and Walnut Creek have the most; each record links to the provider's NPI and the California license search. Page 2 of 3.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 103TA0400X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Diego has the most, 8

  1. San Diego8
  2. Walnut Creek8
  3. Los Angeles7
  4. San Francisco7
  5. Oakland5

Addiction (Substance Use Disorder) Psychologist records in California

  1. Laura Krum, PHDOakland, CA 946071902971310
  2. Ralph Lamson, PH.D.San Rafael, CA 949031285770172
  3. Zoe Lantelme, PSYDSan Francisco, CA 941021114328036
  4. Michael LernerReseda, CA 913351780919217
  5. Daniel MataOroville, CA 959651710494471
  6. Robert Matano, PH.D.Oakland, CA 946181467483123
  7. John McKellar, PH.D.Los Gatos, CA 950321184893778
  8. Maria MendozaLos Angeles, CA 900221235503483
  9. Marina MendozaCommerce, CA 900221124846084
  10. Nicole Miller, PH.D.Martinez, CA 945531174582175
  11. Thomas Miller, PH.D.Campbell, CA 950081568754760
  12. Michael Millman, PH.D.Folsom, CA 956301568542520
  13. Steven Moss, PSY.D.Pasadena, CA 911011477573608
  14. James Murray, RNSan Francisco, CA 941101861526329
  15. Lshonna Nguyen, RRWSacramento, CA 958231407142656
  16. Juliana Nunez-Saksa, PH.D.San Francisco, CA 941151013083948
  17. Patricia O'Connell, PH.D.Santa Rosa, CA 954031740349711
  18. Sean O'Hara, PSY.D.,CADC II,SAPLa Mesa, CA 919421922149269
  19. Lydia OchoaOntario, CA 917611962295055
  20. Rito OchoaVictorville, CA 923951356133003
  21. Carl OddoWalnut Creek, CA 945961154472611
  22. Mary Patock, PSYDSacramento, CA 958211730248857
  23. Karl Pongyingpis, PSYDSan Diego, CA 921341992923601
  24. James Profit, PH.D.San Diego, CA 921081144736000
  25. Richard ReedLos Angeles, CA 900371386051027
  26. Christopher Regan, PSY.D.Torrance, CA 905051861600223
  27. Anna Rodriguez, A.A., C.D.S.Lake View Terrace, CA 913421316122914
  28. Laura Rossi, PH.D.Vista, CA 920831295958874
  29. Stephanie Rothman, PH.D.Petaluma, CA 949541619629094
  30. Ann Schiebert, PSYDWalnut Creek, CA 945961508073792
  31. Samantha Schlossmann, PSY.DMalibu, CA 902651356830657
  32. Natasha Joyce SenadorSan Diego, CA 921051740113075
  33. Shelby Smith, PSY.D.Walnut Creek, CA 945961225581804
  34. Travis SneedSanta Clara, CA 950541740839463
  35. Gina SpradlingSonoma, CA 954761407674377
  36. Annemarie Stokes, PHDSan Diego, CA 921151902011950
  37. William Svoboda, PH.D.Manteca, CA 953371063616910
  38. Matthew Tarran, PH.D.Cupertino, CA 950141245395680
  39. Matthew Taylor, PHDMoreno Valley, CA 925551851955181
  40. Robert TaylorBrea, CA 928211104652577
  41. Jessica Thivierge, PSY.D.San Diego, CA 921011225297609
  42. Dina TorresEncino, CA 913161316565856
  43. Gaetano Vaccaro, PHDCathedral City, CA 922341225335722
  44. Lee ValentineVan Nuys, CA 914111881726735
  45. Kelvin WaglerFranch Camp, CA 952311588547103
  46. Andrea Wagner, PSY.D.Newport Beach, CA 926631366995078
  47. Phylis Wakefield, PH.D.Sonoma, CA 954761811047780
  48. Miriam Walter, PSYDWalnut Creek, CA 945961700375599
  49. Claudia Wathen, PSY.DWalnut Creek, CA 945961497802524
  50. Brendan YangNewport Beach, CA 926601164165338

Source: CMS NPPES, primary taxonomy 103TA0400X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 11 of 47 per resident

  1. New Hampshire0.3
  2. Washington0.3
  3. Kansas0.3
  4. California0.3
  5. Utah0.3
  6. Nevada0.3
  7. 50 states and D.C.0.2

Source: CMS NPPES, primary taxonomy 103TA0400X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

4.9% of these records appear in a Medicare file, against 5.2% 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. California4.9%
  2. United States5.2%

Addiction (Substance Use Disorder) Psychologist records in California, measured

  • In a Medicare file5 of 103 · 4.9% here, 5.2% nationally
  • In the CMS Doctors and Clinicians file6 · 5.8% here, 6.5% nationally
  • Not updated in five years or more57 · 55.3% here, 58.4% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 103TA0400X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

103 NPPES records list addiction (substance use disorder) psychologist (103TA0400X) as their primary taxonomy with a practice address in California: 0.3 per 100,000 residents against 0.2 nationally (50 states and D.C.). San Diego has 8 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. Michigan48
  2. New York34
  3. Ohio26
  4. Massachusetts23

States with a similar rate per 100,000

  1. Washington0.3
  2. Minnesota0.2
  3. Oklahoma0.3
  4. Pennsylvania0.2

The largest states

  1. Michigan48
  2. New York34
  3. Ohio26
  4. Massachusetts23
  5. Pennsylvania23

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.