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 98 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. Danielle Orosco, PHDBakersfield, CA 933011740882125
  2. Marni Orsbern, PSY.D.Costa Mesa, CA 926261710911763
  3. Lideth Ortega-Villalobos, PH.D.Pasadena, CA 911061649644980
  4. Berta Ortiz, PH.D.Los Angeles, CA 900101790864239
  5. Christina Ortiz, PSY.D.Los Angeles, CA 900641831545607
  6. Hector OrtizLathrop, CA 953301386530095
  7. Mildred Ortiz, PSY.D.Cerritos, CA 907031215081799
  8. Tony OrtizOrange, CA 928681932394947
  9. Maria Ortiz-Baker, PSYDVallejo, CA 945891871804856
  10. Yvonne Ortiz-Bush, PHDBakersfield, CA 933051558488056
  11. Kathy Ortiz-Cobian, PH.DSan Quentin, CA 949641851047658
  12. Ian Ortiz-Nance, PSYD.Visalia, CA 932911629238894
  13. Maria-Magdalena Ortiz-Nance, M.A.Visalia, CA 932911609144500
  14. Johann Ortizo, PSBLos Angeles, CA 900481558840785
  15. Kevin OrzechBerkeley, CA 947041336385749
  16. Eden Osborn, BDPlacentia, CA 928701184314759
  17. Lisa Osborn, PSY.D.Santa Monica, CA 904051861649857
  18. Brady OsborneSanta Rosa, CA 954011245909977
  19. Brooke Osborne, PSY.D.Los Altos, CA 940221093915415
  20. Lynette Osborne, PHDCorcoran, CA 932121780024828
  21. Janet Osimo, JANET OSIMOSanta Barbara, CA 931061801045877
  22. Etta-Lea Osterman-Perez, PHDCoalinga, CA 932101063449981
  23. Tamara Osuna, PSYD.Patton, CA 923691487165734
  24. Giovanna OtfinowskiFairfax, CA 949301053899872
  25. Lara Otte, PSY.D.San Francisco, CA 941091013115518
  26. Nancy Otterness, PHD CLINICAL PSYCHOLSacramento, CA 958191861683773
  27. Paul Otto, PH DUkiah, CA 954821407932718
  28. Walter (rusty) Otto, PHDSacramento, CA 958251649682469
  29. Theodore Otvos, PH.D.Long Beach, CA 908071609963933
  30. Yuko Ouchi, PSYDCovina, CA 917241821029703
  31. Norma Ouyang, PSY.D.Irvine, CA 926121326326810
  32. Marieke Overman, PH.D.La Jolla, CA 920371306202726
  33. Rietta Overturf, PHDPerris, CA 925711386785566
  34. Jeffrey Owen, PHDEncinitas, CA 920241033208939
  35. Richard Owen, PHDEscondido, CA 920251831123926
  36. Elizabeth Owens, PHDLafayette, CA 945491649780958
  37. Payton OwensFullerton, CA 928311801638663
  38. Terrence Owens, PH.D.San Francisco, CA 941151912058587
  39. Claire Oxtoby, PHDRancho Cucamonga, CA 917301154679868
  40. Sally Ozonoff, PH.D.Sacramento, CA 958171851376479
  41. Thomas PadernaSacramento, CA 958161336617281
  42. Leticia Padilla, M.A., PSY.D.Los Angeles, CA 900121518251511
  43. Moriah PadillaAnaheim, CA 928061437797859
  44. Ceri Paganelli, PH.D.Roseville, CA 956611164575924
  45. Jaffni Pagavathsing, MHISan Jose, CA 951281780413534
  46. Cherie Page, PH.D.Fremont, CA 945381720512957
  47. Angelique Pagliano, PPSOxnard, CA 930301134056534
  48. Lynsay Paiko, PH.DPalo Alto, CA 943041649726746
  49. Jenny Pak, PH.D.Pasadena, CA 911011700320223
  50. Shirley PakdamanBeverly Hills, CA 902121437515053

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.