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 95 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. Winnie Ng, PSYD, LMFTPasadena, CA 911071235269994
  2. Julie Ngin, PSY.D.Soledad, CA 939601043512668
  3. Mary NgoGilroy, CA 950201205188687
  4. Nicole Ngo, ED.S., PPS, LEPLong Beach, CA 908031376398693
  5. Andy NguyenSan Francisco, CA 941141043691843
  6. Can Nguyen, PHDSan Francisco, CA 941021457559783
  7. Chi Nguyen, PHDSan Francisco, CA 941111720272156
  8. Hoangoanh Anna NguyenSan Jose, CA 951171508347097
  9. Jacquelyn Nguyen, PSY.D.Ontario, CA 917621124542642
  10. Jenna NguyenRosemead, CA 917701033758230
  11. Mark Nguyen, ED.D. PSY.D.Garden Grove, CA 928431487288619
  12. Nina Nguyen, PHDPasadena, CA 911011528533924
  13. Phuong Nguyen, PHDSan Diego, CA 921231598650491
  14. Timothy Nguyen, PSYDDublin, CA 945681649606013
  15. VI Nguyen, PSY.DCommerce, CA 900221881010338
  16. Yasi NiaLos Angeles, CA 900251245184142
  17. Amir NiazmandLos Angeles, CA 900641598209454
  18. Ann Nicholas, PSY.D.Wasco, CA 932801467861021
  19. Suzanne Nicholas, PH.D.Santa Cruz, CA 950601386745917
  20. Bryan Nichols, PH.D.Los Angeles, CA 900351548451081
  21. Ellen Nichols, PSYDCamarillo, CA 930101598280224
  22. Sharon Nichols, PH.D.La Jolla, CA 920931548218753
  23. Dorie-Mae NicolasLoma Linda, CA 923541154108017
  24. Hana Nielsen-Kneisler, PSYDNapa, CA 945581811324007
  25. Lois Nightingale, PHDYorba Linda, CA 928861982700852
  26. Tasha NikoraOceanside, CA 920541992056527
  27. Vida Nikzad, PSYDLos Angeles, CA 900251023256534
  28. Grace Ning, PSY.D.San Diego, CA 921051598911315
  29. Yuko Ninomiya, PSY.D.San Francisco, CA 941021225301146
  30. Jaime Nisenbaum, PH.D.San Rafael, CA 949011902114523
  31. Danielle NishidaCamarillo, CA 930121538558291
  32. Harumi NishidaMountain View, CA 940401326515396
  33. Jeffrey Nishii, PSY.D.Culver City, CA 902301952516981
  34. Janice Nishiyama, PSY.D.Hermosa Beach, CA 902541053875740
  35. Cheri NistlerLos Gatos, CA 950321588228597
  36. Stephen Nitch, PH.D.Patton, CA 923691962454181
  37. Grace Niu, PH.DSan Mateo, CA 944031871870592
  38. Noga Niv, PH.DLos Altos Hills, CA 940221730227067
  39. Marina Niznik, PHDWalnut Creek, CA 945961558138701
  40. Uchenna Nnaji, PSYDSan Bernardino, CA 924081952858961
  41. Arlene Noble, PH.D.Berkeley, CA 947081821299835
  42. Sean NoeEncinitas, CA 920241902720220
  43. Ana Nogales, PHDLos Angeles, CA 900101114022761
  44. Melissa Nola, MS, MA, LEPDanville, CA 945261245153964
  45. Jacqueline Nolan, PSY.D.Tarzana, CA 913561962632703
  46. Charlotte Nolan-Reyes, PHDSanta Cruz, CA 950601588291520
  47. Diana Nolin, PH.D.Ventura, CA 930031669665980
  48. Anne Nolty, PHDPasadena, CA 911011215013982
  49. Johannes Noordeloos, PSY.D.Oceanside, CA 920541649443458
  50. Cynthia Norall, PHD.Carlsbad, CA 920081306925870

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.