NPPES file of Aug 9, 2026

Ambulatory Care Registered Nurse in California

940 NPPES records list ambulatory care registered nurse with a practice address in California, 2.4 per 100,000 residents, the 7th highest rate of 51. Los Angeles and Oakland have the most; each record links to the provider's NPI and the California license search. Page 19 of 19.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 163WP2201X · 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, 272

  1. Los Angeles272
  2. Oakland78
  3. Torrance78
  4. Van Nuys54
  5. Sylmar49

Ambulatory Care Registered Nurse records in California

  1. Ingrid WashingtonLos Angeles, CA 900331184147308
  2. Hitomi WatanabeLos Angeles, CA 900331578080065
  3. Jacqueline Weaver, RNSacramento, CA 958201538417167
  4. Rhonda WeaverLos Angeles, CA 900331134640543
  5. Terri West, RNRoseville, CA 956611467746164
  6. Valerie WigganLos Angeles, CA 900331104348440
  7. Adetola Williams, RNOakland, CA 946021306593702
  8. Angela WilliamsLos Angeles, CA 900591538865720
  9. Charmaine WilliamsLos Angeles, CA 900031740967959
  10. Jacqueline WilliamsLos Angeles, CA 900031720516610
  11. Lindsay Williams, PHD, RNLos Angeles, CA 900031871237263
  12. Omeka WilliamsPasadena, CA 911031235616574
  13. Julie Willkom, RNOakland, CA 946021457816142
  14. Lisa WilsonLong Beach, CA 908131689190464
  15. Tonja WilsonLos Angeles, CA 900591659077022
  16. Cheryl Wilson-Talford, RNOakland, CA 946021750975066
  17. Gina Wing, R.N.Long Beach, CA 908131821453325
  18. Doris Wolfe-Bohannon, RNFort Irwin, CA 923101609911908
  19. Penny Workman, RNMarina, CA 939331396687513
  20. Allyson WreedeSylmar, CA 913421689195935
  21. Camellia WrightOakland, CA 946021619822285
  22. Man Chun Tony Wu, RNOakland, CA 946051134890874
  23. Danna WysingerLos Angeles, CA 900031609742881
  24. Yueli XiLos Angeles, CA 900071427754548
  25. Ericson YabutEast Los Angeles, CA 900221508607938
  26. Leah Yacoub HalperinOakland, CA 946021437984812
  27. Soo YangEl Monte, CA 917311639690415
  28. Anne Yannicelli, RNBurbank, CA 915061841689064
  29. Jerlyn Yatco, RNTorrance, CA 905021992226799
  30. Anahit YedigaryanVan Nuys, CA 914051326690207
  31. Theresa YooVan Nuys, CA 914051124558523
  32. Connie YounLos Angeles, CA 900071467972885
  33. Timothy Young, REGISTERED NURSEEast Los Angeles, CA 900221760220404
  34. Chi Man Yu, RNTorrance, CA 905021700370822
  35. Ryan YutucSylmar, CA 913421578437547
  36. Maria Teresa Zamudio, RNEl Monte, CA 917311609633379
  37. Zoila Zanabria-GonzalezEl Monte, CA 917311881156586
  38. Shanshan ZhangEl Monte, CA 917311801653563
  39. Maria Noel Zimmerman, RNSan Francisco, CA 941031154259661
  40. Sandra ZunigaVan Nuys, CA 914051245193416

Source: CMS NPPES, primary taxonomy 163WP2201X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 7 of 51 per resident

  1. Wyoming2.7
  2. Alaska2.6
  3. Wisconsin2.6
  4. California2.4
  5. Massachusetts2.3
  6. Rhode Island2.2
  7. 50 states and D.C.1.0

Source: CMS NPPES, primary taxonomy 163WP2201X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

2.2% of these records appear in a Medicare file, against 1.3% 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. California2.2%
  2. United States1.3%

Ambulatory Care Registered Nurse records in California, measured

  • In a Medicare file21 of 940 · 2.2% here, 1.3% nationally
  • In the CMS Doctors and Clinicians file5 · 0.5% here, 0.4% nationally
  • Not updated in five years or more413 · 43.9% here, 42.7% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 163WP2201X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

940 NPPES records list ambulatory care registered nurse (163WP2201X) as their primary taxonomy with a practice address in California: 2.4 per 100,000 residents against 1 nationally (50 states and D.C.). Los Angeles has 272 of them (29%).

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. Ohio199
  2. Massachusetts164
  3. Texas159
  4. Wisconsin151

States with a similar rate per 100,000

  1. Alaska2.6
  2. Rhode Island2.2
  3. Wyoming2.7
  4. Nebraska1.9

The largest states

  1. Ohio199
  2. Massachusetts164
  3. Texas159
  4. Wisconsin151
  5. Michigan130

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.