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 2 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. Adrian ArcelonaPalo Alto, CA 943041992516660
  2. Manuel ArellanoLos Angeles, CA 900221124650874
  3. Maria ArellanoLos Angeles, CA 900591447957303
  4. Nancy ArellanoLos Angeles, CA 900331053833459
  5. Bridgette ArevaloEast Los Angeles, CA 900221588335434
  6. Meisy ArevaloSylmar, CA 913421982124467
  7. Rosario ArlosPalo Alto, CA 943041629897509
  8. Ursula Arndt, RNLos Angeles, CA 900331669994901
  9. Nancy Arredondo, RNLos Angeles, CA 900331790207603
  10. Yenis ArriolaSylmar, CA 913421518487867
  11. Maria ArtuzSylmar, CA 913421124548987
  12. Arpy Atmajian, REGISTERED NURSEVan Nuys, CA 914051164079471
  13. Estrella AumentadoOakland, CA 946021700565231
  14. Dennise Austin, REGISTERED NURSEInglewood, CA 903011245941020
  15. Laura Avalos De AyalaLancaster, CA 935351043732282
  16. Nelia AvilaTorrance, CA 905021477078855
  17. Hector AyalaLos Angeles, CA 900591427763911
  18. Taline Azadian, RNTarzana, CA 913561861380735
  19. Kristina Azucenas Stauffer, RNDowney, CA 902421477365062
  20. Ma Rissa Arianne AzurelSylmar, CA 913421861905697
  21. Anita Backer, RNBerkeley, CA 947201659640068
  22. Meliton BadajosVan Nuys, CA 914051104530948
  23. Minah Baek, RNOakland, CA 946021760143895
  24. Breanne BakerFresno, CA 937281821885278
  25. Therese BalladaAlhambra, CA 918031679440937
  26. Raymond Baluyot, RNVan Nuys, CA 914051184285413
  27. Viola BanguraLos Angeles, CA 900031841710589
  28. Ericka Banuelos, RNEl Monte, CA 917311679331201
  29. Rosalia BarahonaPalmdale, CA 935521346761780
  30. Dulce BarajasAlhambra, CA 918031467298448
  31. Melissa Barnard, RNChico, CA 959731891543203
  32. Deborah Barraza, RNSylmar, CA 913421255851929
  33. Maricela Bautista, RNLos Angeles, CA 900071639884380
  34. Yungnan Beak, RNMarina, CA 939331114765351
  35. Cassandra Beauvoir, RNChatsworth, CA 913111881305662
  36. Esmeralda Bedoy, REGISTERED NURSELos Angeles, CA 900221942084389
  37. Marlene Bedrich, RNSan Francisco, CA 941431659611853
  38. Patricia BellLos Angeles, CA 900331235656224
  39. Josefina Beltran, RNEl Monte, CA 917311215793260
  40. Amy Benesh, RN, PHNSanta Barbara, CA 931051760824130
  41. Faamuli BenigayLos Angeles, CA 900071336854090
  42. Elizabeth BenjaminHayward, CA 945451134685092
  43. Lanomay Benjamin, RNLos Angeles, CA 900331578085890
  44. Thaison BergLos Angeles, CA 900331629599048
  45. Jennifer BerkeryRocklin, CA 957651578339214
  46. Benjamin Barlow Bernardo, RN, PHNLos Angeles, CA 900631891533212
  47. Stephanie BertulanoTorrance, CA 905021700306461
  48. Linda Black-CastilloLos Angeles, CA 900591427588573
  49. Antoinette Blackstock, RNLong Beach, CA 908131841903291
  50. Rachel BlairPalo Alto, CA 943041033071170

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.