NPPES file of Aug 9, 2026

Contractor in California

457 NPPES records list contractor with a practice address in California, 1.2 per 100,000 residents, the 37th highest rate of 51. San Francisco and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 10 of 10.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 171W00000X · method

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

San Francisco has the most, 29

  1. San Francisco29
  2. Los Angeles28
  3. San Diego25
  4. San Jose11
  5. Fresno10

Contractor records in California

  1. Ruilian Ye, LMTWoodland Hills, CA 913641306867718
  2. Blanche Yeaton, BUSINESSRocklin, CA 957651659208262
  3. Peppina Joy YegoyanEncino, CA 914361417722786
  4. Yiu YuDiamond Bar, CA 917651134818081
  5. Mohamed YusufSan Diego, CA 921051083168983
  6. John Zavoshy, M.D.Mountain View, CA 940411043420391
  7. Frank ZunigaFresno, CA 937201336914993

Source: CMS NPPES, primary taxonomy 171W00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 37 of 51 per resident

  1. Wisconsin1.4
  2. North Carolina1.3
  3. Massachusetts1.2
  4. California1.2
  5. Kansas1.2
  6. Mississippi1.1
  7. 50 states and D.C.2.5

Source: CMS NPPES, primary taxonomy 171W00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

2.0% of these records appear in a Medicare file, against 0.8% 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. California2.0%
  2. United States0.8%

Contractor records in California, measured

  • In a Medicare file9 of 457 · 2.0% here, 0.8% nationally
  • In the CMS Doctors and Clinicians file5 · 1.1% here, 0.7% nationally
  • Not updated in five years or more350 · 76.6% here, 73.8% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 171W00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

457 NPPES records list contractor (171W00000X) as their primary taxonomy with a practice address in California: 1.2 per 100,000 residents against 2.5 nationally (50 states and D.C.). San Francisco has 29 of them (6%).

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. Indiana332
  2. Arizona323
  3. New York623
  4. Texas635

States with a similar rate per 100,000

  1. Kansas1.2
  2. Massachusetts1.2
  3. Mississippi1.1
  4. Alabama1.1

The largest states

  1. Florida749
  2. Ohio705
  3. Georgia699
  4. Texas635
  5. New York623

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.