NPPES file of Aug 9, 2026

Psychologist in California

7,304 NPPES records list psychologist with a practice address in California, 19 per 100,000 residents, the 13th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 96 of 147.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 103T00000X · 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, 671

  1. Los Angeles671
  2. San Francisco516
  3. San Diego431
  4. Oakland257
  5. Sacramento165

Psychologist records in California

  1. Bert NorcrossPleasant Hill, CA 945231831669449
  2. Mary Ann Norfleet, PHDStanford, CA 943051396872602
  3. Monica NoriegaSan Francisco, CA 941101306399373
  4. Bradley Norlander, PH.D.Oakhurst, CA 936441487958229
  5. Marc Norman, PHDSan Diego, CA 921031922169101
  6. Ranesha NormanBakersfield, CA 933121518793181
  7. Sloan Norman, PHDSan Francisco, CA 941181598826695
  8. Devin Normington, PH.D.Oakland, CA 946091144427287
  9. Michael Noronha, ED.D.Fremont, CA 945381659437853
  10. Rina Norris, PSY.D.El Dorado Hills, CA 957621700199189
  11. Marquel NortonSanta Ana, CA 927011891414546
  12. Mary Ann Notari, MFTHermosa Beach, CA 902541437233178
  13. Ursula NotoGlendale, CA 912051063881415
  14. Shahrzad Nouraini, PSYDSan Francisco, CA 941021053802157
  15. Guita NouranianLaguna Hills, CA 926531184072423
  16. Shaghayegh Nourian, PSY.DLos Angeles, CA 900261164734968
  17. Lukas NovakSan Francisco, CA 941151235057225
  18. Kenneth NowackSanta Monica, CA 904051306783675
  19. Bonnie Noyes, PH.D.Sacramento, CA 958111619293719
  20. Matthew Nozaki, PHDNewport Beach, CA 926601386251122
  21. Keith Nuechterlein, PHDLos Angeles, CA 900951376567867
  22. Gail Nufeld, PH.D.Fairfield, CA 945331790992287
  23. Mary Ann Nugent, PSYDIrvine, CA 926121891921821
  24. Patrick Nugent, PH.D.Mountain View, CA 940411275021925
  25. Jazalyn Nunez, RPALa Mesa, CA 919421265148449
  26. Meghan Nunez, PSYDSanta Rosa, CA 954041093900680
  27. Dana NussbaumNovato, CA 949471073934998
  28. Fabrice Nye, PH.D.Redwood City, CA 940631407105257
  29. Floyd O'Brien, PH.D.Stockton, CA 952041720021975
  30. Mary O'Brien, PHDLos Angeles, CA 900951306850490
  31. Katherine O'Connell, PH.D.Arcata, CA 955211336423524
  32. Paige O'Connell, PSY.D.Orinda, CA 945631376060517
  33. Dennis O'Connor, M.D.Monterey, CA 939401801965942
  34. Elizabeth O'Connor, PH.D.Walnut Creek, CA 945961982614996
  35. Jennifer O'Connor, PH.D.San Clemente, CA 926721396955258
  36. Marilyn O'Connor, PSY.D.Albany, CA 947061295895613
  37. Michael O'Connor, PHDStanford, CA 943051164559472
  38. Shion O'Connor, PSYDBurlingame, CA 940101043787542
  39. Caitlin O'DonnellRedwood City, CA 940631649932252
  40. James O'Dowd, PSY.D.San Francisco, CA 941021003967126
  41. Kathrine O'Dowd, PHDTorrance, CA 905051053015487
  42. Kathy O'Fallon, PSY.D.Fallbrook, CA 920281851325567
  43. Holly O'Hearn, PH.D.Thousand Oaks, CA 913601083830723
  44. Ryan O'Keefe, PSYDSan Diego, CA 921081861121295
  45. Sean O'Laoire, PH.D.Los Altos, CA 940221790958486
  46. Kerrie O'Leary-Sanchez, PSYDWhittier, CA 906031669993309
  47. Devon O'Neill, PSY.D.Del Mar, CA 920141104026954
  48. Margaret O'Neill, PHDSan Luis Obispo, CA 934011073696910
  49. Patrick O'Reilly, PHDNapa, CA 945581700054467
  50. Maria O'Tuel, PSYDSanta Clarita, CA 913501962494328

Source: CMS NPPES, primary taxonomy 103T00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 13 of 51 per resident

  1. West Virginia20
  2. Nebraska19
  3. Maryland19
  4. California19
  5. Maine19
  6. North Dakota18
  7. 50 states and D.C.14

Source: CMS NPPES, primary taxonomy 103T00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

6.2% of these records appear in a Medicare file, against 10.1% 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. California6.2%
  2. United States10.1%

Psychologist records in California, measured

  • In a Medicare file453 of 7,304 · 6.2% here, 10.1% nationally
  • In the CMS Doctors and Clinicians file1,058 · 14.5% here, 18.0% nationally
  • Not updated in five years or more4,318 · 59.1% here, 63.9% nationally
  • Median graduation year2005 · the 1,058 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 103T00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

7,304 NPPES records list psychologist (103T00000X) as their primary taxonomy with a practice address in California: 19 per 100,000 residents against 14 nationally (50 states and D.C.). Los Angeles has 671 of them (9%).

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. New York5,045
  2. Pennsylvania2,687
  3. Michigan2,549
  4. Massachusetts2,367

States with a similar rate per 100,000

  1. Maine18.6
  2. Maryland19.1
  3. North Dakota18.2
  4. Nebraska19.3

The largest states

  1. New York5,045
  2. Pennsylvania2,687
  3. Michigan2,549
  4. Massachusetts2,367
  5. Florida2,202

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.