NPPES file of Aug 9, 2026

Gerontology Registered Nurse in California

59 NPPES records list gerontology registered nurse with a practice address in California, 0.2 per 100,000 residents, the 23rd highest rate of 46. San Diego and Sacramento have the most; each record links to the provider's NPI and the California license search. Page 2 of 2.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 163WG0600X · 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, 7

  1. San Diego7
  2. Sacramento5
  3. San Francisco5
  4. Santee5
  5. Fresno2

Gerontology Registered Nurse records in California

  1. Erna Teng, NPSanta Ana, CA 927041790127413
  2. Daisy Mae TonsayCerritos, CA 907031235067463
  3. Janice Tovera, R.N.Sunnyvale, CA 940851700022431
  4. Merlyn Trinidad, RNSan Diego, CA 921271881896488
  5. Ailin VasseurOrange, CA 928681770403362
  6. Lou Ann Weiss, RNSacramento, CA 958201215080551
  7. Joanne Weith, RNMenlo Park, CA 940251255539524
  8. Marilyn Williams, MS, RNSan Francisco, CA 941151497972822
  9. Yanci Wu, RNSan Francisco, CA 941331144814591

Source: CMS NPPES, primary taxonomy 163WG0600X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 23 of 46 per resident

  1. Georgia0.2
  2. Massachusetts0.2
  3. Vermont0.2
  4. California0.2
  5. District of Columbia0.1
  6. Maryland0.1
  7. 50 states and D.C.0.2

Source: CMS NPPES, primary taxonomy 163WG0600X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

5.1% of these records appear in a Medicare file, against 5.9% 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. California5.1%
  2. United States5.9%

Gerontology Registered Nurse records in California, measured

  • In a Medicare file3 of 59 · 5.1% here, 5.9% nationally
  • In the CMS Doctors and Clinicians file0 · 0.0% here, 4.2% nationally
  • Not updated in five years or more39 · 66.1% here, 60.8% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 163WG0600X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

59 NPPES records list gerontology registered nurse (163WG0600X) as their primary taxonomy with a practice address in California: 0.2 per 100,000 residents against 0.2 nationally (50 states and D.C.). San Diego has 7 of them (12%).

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 York53
  2. Ohio67
  3. Oregon42
  4. New Jersey35

States with a similar rate per 100,000

  1. Massachusetts0.2
  2. Georgia0.2
  3. Texas0.1
  4. Missouri0.2

The largest states

  1. Ohio67
  2. New York53
  3. Oregon42
  4. New Jersey35
  5. Texas34

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.