NPPES file of Aug 9, 2026

Forensic Psychologist in California

257 NPPES records list forensic psychologist with a practice address in California, 0.7 per 100,000 residents, the 3rd highest rate of 49. San Diego and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 6 of 6.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 103TF0200X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Diego has the most, 17

  1. San Diego17
  2. Los Angeles15
  3. Oakland11
  4. Santa Ana11
  5. Coalinga9

Forensic Psychologist records in California

  1. Ralph Williams, PH.D.Sylmar, CA 913421336225374
  2. Michelle WysopalRichmond, CA 948061720375975
  3. Brandon Yakush, PSYDAtascadero, CA 934221720225642
  4. Elise Yenne, PH.D.Patton, CA 923691750158317
  5. Emily ZieglerFresno, CA 937201396039764
  6. Gordon Zilberman, PH.D.Camp Pendleton, CA 920551164751368
  7. Gary Zinik, PH.D.Ventura, CA 930031730530684

Source: CMS NPPES, primary taxonomy 103TF0200X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 3 of 49 per resident

  1. Massachusetts1.2
  2. Oregon0.7
  3. California0.7
  4. District of Columbia0.6
  5. New Hampshire0.5
  6. 50 states and D.C.0.2

Source: CMS NPPES, primary taxonomy 103TF0200X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

3.5% of these records appear in a Medicare file, against 2.5% 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. California3.5%
  2. United States2.5%

Forensic Psychologist records in California, measured

  • In a Medicare file9 of 257 · 3.5% here, 2.5% nationally
  • In the CMS Doctors and Clinicians file13 · 5.1% here, 5.1% nationally
  • Not updated in five years or more171 · 66.5% here, 62.5% nationally
  • Median graduation year2007 · the 13 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 103TF0200X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

257 NPPES records list forensic psychologist (103TF0200X) as their primary taxonomy with a practice address in California: 0.7 per 100,000 residents against 0.2 nationally (50 states and D.C.). San Diego has 17 of them (7%).

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. Massachusetts86
  2. New York37
  3. Texas36
  4. Michigan33

States with a similar rate per 100,000

  1. Oregon0.7
  2. Minnesota0.5
  3. Washington0.3
  4. Colorado0.3

The largest states

  1. Massachusetts86
  2. New York37
  3. Texas36
  4. Michigan33
  5. Florida32

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.