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 109 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. Neil Ribner, PH.D.San Diego, CA 921311396887360
  2. Hollie Rice, PH.D.Los Angeles, CA 900251902014335
  3. Linda Rice, PSYDSimi Valley, CA 930651609414788
  4. Lori Rice, PSYDSan Diego, CA 921791992311609
  5. Susan Rice, PH.D.Arcadia, CA 910061902812191
  6. Jonathan Rich, PH.D.Irvine, CA 926181356336887
  7. Lisa RichardsIone, CA 956401457750143
  8. Amanda Richardson, PSYDRocklin, CA 957651265182836
  9. Danielle Richardson, PSYDOakland, CA 946091316179039
  10. Fred Richardson, PH.D.Cerritos, CA 907031801974928
  11. Iris Richardson, PH.D.Santa Ana, CA 927011922396084
  12. Jason RichardsonOceanside, CA 920541003135666
  13. Lisa Richardson, PH.D.Glendale, CA 912031003926536
  14. Paul RichardsonInglewood, CA 903011225984743
  15. Robert Richey, PH.D.Santa Maria, CA 934551003995598
  16. Anna RichmondSebastopol, CA 954721790815371
  17. Fredric Richmond, PH.D.Irvine, CA 926031417178450
  18. Alicia RickelsSan Diego, CA 921011881200566
  19. Lana Rickey, PSYDAnaheim, CA 928081497801831
  20. Sloane RickmanLaguna Niguel, CA 926771538727763
  21. Killorin Riddell, PHDAtascadero, CA 934221417188822
  22. Eugene Riddle, PHDOakland, CA 946111740341239
  23. Sarah Riehl, PSYDHermosa Beach, CA 902541114433620
  24. Michele Riggs, PSYDSanta Ana, CA 927011174615611
  25. Renee Riggs, PSYDOceanside, CA 920541760054910
  26. Vanessa RiggsSonoma, CA 954761982189049
  27. Jennifer Rikard, PH.D.San Diego, CA 921031609115351
  28. David Riland, PH.D.Berkeley, CA 947091912117763
  29. Erin Riley, PH.D.Sebastopol, CA 954721902824386
  30. Sheree Riley Violon, PSY.D.Orange, CA 928661063606911
  31. Erika RinconOakland, CA 946021396673828
  32. Jessie Rincon-Schlutz, PSY.D.Santa Fe Springs, CA 906701700267499
  33. Bonnie Ring, LICENSEDPSYCHOLOGISTMoss Beach, CA 940381003027368
  34. Phyllis RingSan Rafael, CA 949011902296197
  35. Linda Ringer, PH.D.Los Angeles, CA 900251437872926
  36. Natalie Rios, PSY.D.Riverside, CA 925071114094554
  37. Dane Ripellino, PSY.D.San Diego, CA 921031174691018
  38. Susan RischallVan Nuys, CA 914061336485085
  39. Wendy Ritchey, PH.D.Walnut Creek, CA 945951750588638
  40. Lane Ritchie, PHDNewport Beach, CA 926631326622861
  41. Arthur Ritmeester, PH.D.Pomona, CA 917681598553216
  42. Bartell RiveraSan Diego, CA 921011295361822
  43. Cassandra Rivera, MS, PPS, LEPBakersfield, CA 933121558052464
  44. Ernest Rivera, PH.D.Montebello, CA 906401003908823
  45. Evelyn RiveraHayward, CA 945441760963896
  46. Nicole Rivera CaquiasSacramento, CA 958171538928577
  47. Lynette RiversSan Diego, CA 921231669075339
  48. Christian Rizea, PSY.DSan Francisco, CA 941171215185566
  49. Miriam Rizk, PSY.D.Riverside, CA 925011932729514
  50. Sarah Rizvi, PHDPalo Alto, CA 943011093048399

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.