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 141 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. Induni WickramasingheSan Francisco, CA 941181366381642
  2. Erika Widera, PSY.D.Rancho Cucamonga, CA 917391255589230
  3. Katherine Wiebe, PSYD, PHD, MDIVPasadena, CA 911071396590147
  4. Katherine Wiebe, PH.D.San Francisco, CA 941211447610548
  5. Bridget Wieckowski, PSYDSan Jose, CA 951281366818577
  6. Michael Wiederstein, PH.D.Elk Grove, CA 957581609918838
  7. Lateefh Wielenga, PSYCHOLOGISTLong Beach, CA 908081972797660
  8. Joseph Wielgosz, PHDMenlo Park, CA 940251174375745
  9. Duncan Wigg, PHDNewport Beach, CA 926601538375944
  10. Danielle WigginsSanta Monica, CA 904051326879305
  11. Paula Wilbourne, PHDMenlo Park, CA 940251316125610
  12. Brigitte WilburgOxnard, CA 930331215465018
  13. Elizabeth Wilcox, PH.D., LEPLafayette, CA 945491861829608
  14. Stacey Wilcoxson, PSY.D.Atascadero, CA 934221760626964
  15. Sandra Wilder-Padilla, PHDEncino, CA 914361093895914
  16. Mary Wiley, PSY.D.Danville, CA 945261942300504
  17. Jayson WilkenfieldSacramento, CA 958111376954321
  18. Susan Wilkens, PH.D.San Francisco, CA 941231114144862
  19. Fred Wilkey, ED.D.West Hollywood, CA 900691215953245
  20. Ashley WilkinsFremont, CA 945381619350311
  21. Sarah Wilkinson, PSY.D.San Bernardino, CA 924081497172001
  22. Charlene Willams, CPLos Angeles, CA 900491164637062
  23. Kirsten Willar, PH.D.Palo Alto, CA 943041285084095
  24. Laura Willard, PSY.D.San Diego, CA 921081538390406
  25. Brooke Williams, PHDSouth San Francisco, CA 940801437826617
  26. Caitlin WilliamsVan Nuys, CA 914061487332516
  27. Camilla Williams, PH.D.Poway, CA 920641154849933
  28. Charles Williams, PSYDLos Angeles, CA 900361366875320
  29. Danett Williams, LEPRedwood City, CA 940621710564471
  30. Donald Williams, PSY.D.Palo Alto, CA 943011396132528
  31. Jonnie Williams, PSY.D.Santa Barbara, CA 931101912281635
  32. Katherine Williams, PH.D.San Diego, CA 921231033316005
  33. Laura Williams, PSY. D.Lafayette, CA 945491083116651
  34. Lori Williams, PSY.D.Northridge, CA 913241093023079
  35. Lucille Williams, PSYDFresno, CA 937101750433066
  36. Margaret WilliamsSan Diego, CA 921211225505480
  37. Miranda Williams, PSY.D.Alpine, CA 919011720003056
  38. Paris Williams, PHDSan Rafael, CA 949011669753059
  39. Robert Williams, PH.D.South San Francisco, CA 940801669614723
  40. Rochelle WilliamsLos Angeles, CA 900591962907048
  41. Ronald Williams, PH.D.Gilroy, CA 950201417125014
  42. Sammie Williams, PSY.D.Cerritos, CA 907031164607834
  43. Shannon Williams, PSYDDelano, CA 832151578719001
  44. Stephanie Williams, PHDGilroy, CA 950201669765590
  45. Lori Willis, PH.D.Los Angeles, CA 900201285771832
  46. Joyce Wilmes-Reitz, PH.D.Calabasas, CA 913021831131192
  47. Marc Wilmes-Reitz, PH.D.Calabasas, CA 913021568407427
  48. Beth Wilson, ED.D.Richmond, CA 948011316011489
  49. Clarence Wilson, PH.D.Chino, CA 917101992074876
  50. Eva Wilson, PH.D.Santa Barbara, CA 931011649293424

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.