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 11 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. Ines Lopez, RN, PHNLos Angeles, CA 900331659899714
  2. Lilly LopezEast Los Angeles, CA 900221811419039
  3. Lissete Lopez, RNLivermore, CA 945501205625332
  4. Nancy LopezLancaster, CA 935351609397173
  5. Norma LopezVan Nuys, CA 914051649982067
  6. Roselia Lopez, REGISTERED NURSESylmar, CA 913421164942421
  7. Sandra Lopez, REGISTERED NURSEPalmdale, CA 935521740994961
  8. Lorna LoredoLos Angeles, CA 900071740700343
  9. Jessica Lorgerodriguez, RNModesto, CA 953551376437392
  10. Anna Kari Low, RNFremont, CA 945381235977836
  11. Brenda LozadaDowney, CA 902421811707144
  12. Rhoderick LucianoVan Nuys, CA 914051164134573
  13. Kanitha LuckanavanichLos Angeles, CA 900331588187199
  14. Carlene Lugtu, RNStanford, CA 943051871454256
  15. Helen Luk, RNSan Francisco, CA 941431962339093
  16. Mary Ann LumanogLos Angeles, CA 900331598287997
  17. Paula Luna LunaLos Angeles, CA 900331346763968
  18. Erin Luttringer, RNRedlands, CA 923741356088074
  19. Yessenia Machado-RosselleSpring Valley, CA 919771255921748
  20. Donna Macnair, RNLancaster, CA 935351992225346
  21. Luzviminda Madrid, RNTorrance, CA 905021336679554
  22. Brandon Mageesmith, RNSan Jose, CA 951251316822471
  23. Elaheh Mahzad, RNDowney, CA 902421194534123
  24. Gloria MaiLos Angeles, CA 900331578085825
  25. Cheryll Marie MallariSan Jose, CA 951381760229876
  26. Jeffrey ManaleseDowney, CA 902421366254757
  27. Ninel ManoukianSylmar, CA 913421265952766
  28. Marina ManukianGlendale, CA 912061750094884
  29. Jizhen MaoOakland, CA 946021699233395
  30. Alfa MarcellanaTorrance, CA 905021104382787
  31. Terrence Marcotte, NP MSNSan Francisco, CA 941101952428328
  32. Charles Marion, NPSan Francisco, CA 941021639201668
  33. Inderjot MarokSylmar, CA 913421497276380
  34. Patricia MarquezLos Angeles, CA 900331982126959
  35. Amalia MartinezVan Nuys, CA 914051578093316
  36. Elizabeth Martinez, RNPalmdale, CA 935521962378950
  37. Judith MartinezTorrance, CA 905021629598933
  38. Velia MartinezLos Angeles, CA 900331275051849
  39. Veronica MartinezLancaster, CA 935351740996685
  40. Karina Martinez Juarez, RNLos Angeles, CA 900031982310678
  41. Alma Mathus, RNLos Angeles, CA 900071093420754
  42. Diane Matsuda, RNLos Angeles, CA 900331487176723
  43. Lenica MatthewsLos Angeles, CA 900331437671849
  44. Gagandeep MaviPalo Alto, CA 943041730990409
  45. Jason Mark Mayor, RNSanta Clara, CA 950541902753833
  46. Florence MbanuLos Angeles, CA 900591508563461
  47. James McAleer, RNWindsor, CA 954921407424971
  48. Caitlin McCarthy, RNOakland, CA 946021730364993
  49. Nicholaus McDevitt, RNRedlands, CA 923731003730516
  50. Raquel McHann, RN IILos Angeles, CA 900331689195059

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.