NPPES file of Aug 9, 2026

Clinical Psychologist in California

12,647 NPPES records list clinical psychologist with a practice address in California, 32 per 100,000 residents, the 7th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 164 of 253.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 103TC0700X · 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, 1,268

  1. Los Angeles1,268
  2. San Diego983
  3. San Francisco802
  4. Oakland354
  5. Pasadena293

Clinical Psychologist records in California

  1. Tanya Nguyen, PH.D.San Diego, CA 921031205213717
  2. Thuhien NguyenMilpitas, CA 950351336790591
  3. Tryston Nguyen, PSY.D.Orange, CA 928681386889228
  4. Tuong Nguyen, PH.D.Santa Ana, CA 927011124030150
  5. Van Nguyen, PH.D.San Diego, CA 921211063630770
  6. Viet Nguyen, PSY.D.Sacramento, CA 958271255441325
  7. Lan Nguyen Chawkins, PSYCHOLOGISTAlhambra, CA 918011821049669
  8. Franca Niameh, PSYDRichmond, CA 948011639620974
  9. Perry Nicassio, PHDLos Angeles, CA 900951215951868
  10. Eric Nicely, PSYDSan Francisco, CA 941041114049657
  11. Pamela Nicely, PH.D.Studio City, CA 916041760586051
  12. Larry NicholasSacramento, CA 958161831501295
  13. Alexandra Nichols, PHDCorte Madera, CA 949251023465259
  14. George Nichols, PH.D.Pebble Beach, CA 939531609883040
  15. Jenny Nichols, PSY.D.Roseville, CA 956611316455926
  16. Kaitlyn Nichols, M.A.Fresno, CA 937111154875789
  17. Steven Nichols, PH.D.Fresno, CA 937221063571941
  18. Vanessa Nicholson, PSYDRoseville, CA 956611518611649
  19. Brittany Nickels, PSY.D.Los Angeles, CA 900121063262517
  20. Elizabeth Nickels, M.A., PSY.D.San Leandro, CA 945771184882607
  21. John Nickens, PHDOakland, CA 946091427115542
  22. Kathleen Nickerson, PHDNewport Beach, CA 926601639219694
  23. Kendra Nickerson, PHDPasadena, CA 911061740498625
  24. Raymond Nickerson, PSY.D.Richmond, CA 948061982969226
  25. Elizabeth NicklasPatton, CA 923691659247021
  26. Eva Nicolas, PSYDLos Gatos, CA 950301942949581
  27. Joseph Nicolosi, PH.D.Encino, CA 913161700165602
  28. Janet Niederman, PH.D.West Los Angeles, CA 900251891270419
  29. Melinda Nielsen, PH.D.Redding, CA 960021619127073
  30. Sherri Nielsen, PSY.D.Long Beach, CA 908131841695129
  31. Eric Niemeyer, PSY. D.Vacaville, CA 956881154584894
  32. Tara Niendam, PHDSacramento, CA 958171215180427
  33. Jamie Nierenberg, PSYDLos Angeles, CA 900261063840031
  34. Misook Nierodzik, PSY. D.West Covina, CA 917911033252283
  35. Douglas Nies, PH.D.Glendale, CA 912031609091859
  36. Arti Nigam, PH.D.San Jose, CA 951281487797445
  37. John Nigbor, PSYDChino, CA 917101811334204
  38. Mary Nikityn, PSY.D.Redlands, CA 923731497178578
  39. Nancy Nikkel, PH.D.Delano, CA 932151659549178
  40. Christopher Nikolaidis, PHDNewport Beach, CA 926601003016197
  41. Natalia Nikolova, PH.D.Irvine, CA 926141992190383
  42. Heli Nikulainen, PHDSan Leandro, CA 945781952438699
  43. Azar Nikzad Newton, PSY.D.Corcoran, CA 932121609997709
  44. Andrea NilesDanville, CA 945261013397272
  45. Parissa Nili, PSYDLos Angeles, CA 900891164856985
  46. Marcia Nimmer, PSYDBeverly Hills, CA 902121699319392
  47. Fred Ninonuevo, PHDCamp Pendleton, CA 920551457337255
  48. Summer Nipomnick, PHDCorte Madera, CA 949251982130514
  49. Kellie Nissen, PSYDOakland, CA 946091669023750
  50. Nooshafarin Niv, PHDGlendale, CA 912031649813395

Source: CMS NPPES, primary taxonomy 103TC0700X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 7 of 51 per resident

  1. Massachusetts45
  2. Hawaii45
  3. New York34
  4. California32
  5. Illinois31
  6. Connecticut31
  7. 50 states and D.C.20

Source: CMS NPPES, primary taxonomy 103TC0700X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

8.7% of these records appear in a Medicare file, against 12.2% 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. California8.7%
  2. United States12.2%

Clinical Psychologist records in California, measured

  • In a Medicare file1,104 of 12,647 · 8.7% here, 12.2% nationally
  • In the CMS Doctors and Clinicians file2,425 · 19.2% here, 22.4% nationally
  • Not updated in five years or more8,008 · 63.3% here, 65.3% nationally
  • Median graduation year2006 · the 2,424 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 103TC0700X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

12,647 NPPES records list clinical psychologist (103TC0700X) as their primary taxonomy with a practice address in California: 32 per 100,000 residents against 20 nationally (50 states and D.C.). Los Angeles has 1,268 of them (10%).

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 York6,558
  2. Illinois3,947
  3. Massachusetts3,185
  4. Florida2,980

States with a similar rate per 100,000

  1. Connecticut30.8
  2. Michigan29.5
  3. Colorado28.1
  4. Oregon27.0

The largest states

  1. New York6,558
  2. Illinois3,947
  3. Massachusetts3,185
  4. Florida2,980
  5. Michigan2,965

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.