NPPES file of Aug 9, 2026

Registered Nurse in California

13,506 NPPES records list registered nurse with a practice address in California, 35 per 100,000 residents, the 30th highest rate of 51. San Diego and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 40 of 271.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 163W00000X · 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, 1,223

  1. San Diego1,223
  2. San Francisco625
  3. Los Angeles526
  4. Sacramento508
  5. Fresno500

Registered Nurse records in California

  1. Christine CastanedaSanta Ana, CA 927011659744514
  2. Danielle Castaneda, R.N.Pomona, CA 917661417350539
  3. Diana Castaneda, RNImperial, CA 922511659191088
  4. Julie Castaneda, RNLos Angeles, CA 900021902562200
  5. Laura CastanedaAntioch, CA 945091205277431
  6. Lauri Castaneda, CA REGISTERED NURSERedlands, CA 923741326637406
  7. Natalie Castaneda, RNVentura, CA 930031396119970
  8. Yohana Castaneda Rios, REGISTERED NURSESanta Ana, CA 927011740064278
  9. Teresa Casteen, RNEl Cajon, CA 920191023302809
  10. Daisy Castellano, RNBakersfield, CA 933071073311452
  11. Jannet CastellanoSanta Ana, CA 927011205385010
  12. Elizabeth Castellanos, RNLa Jolla, CA 920931164377909
  13. Ellen Castellanos, RN, CPNPAtascadero, CA 934221659303345
  14. Jacklyn Castellanos, REGISTERED NURSERedding, CA 960021275147548
  15. Lucinda Castellanos, RNSanta Barbara, CA 931101265673446
  16. Marco CasteloLos Angeles, CA 900731811127095
  17. Meljorie Castelo, REGISTERED NURSEColton, CA 923241700044807
  18. Alicia CastilloFresno, CA 937211558589564
  19. Amber Castillo, RNRiverside, CA 925041316860414
  20. Anna CastilloSantee, CA 920711689202319
  21. Bryan CastilloRedlands, CA 923731689567349
  22. Elizabeth Castillo, RNSan Diego, CA 921101033708433
  23. Helen Castillo, RNSan Diego, CA 921011033929427
  24. Jennilyn CastilloColton, CA 923241356282792
  25. Jessica Castillo, RNLoma Linda, CA 923571932028636
  26. Jessica Castillo, RNPaso Robles, CA 934461366068314
  27. Joseph CastilloSan Diego, CA 921011801426648
  28. Kelly CastilloFairfield, CA 945341154916617
  29. Kyle Castillo, RNColton, CA 923241508439217
  30. Michael CastilloVacaville, CA 956881760274229
  31. Regina CastilloThousand Oaks, CA 913601043038664
  32. Teresa CastilloLos Angeles, CA 900261831843366
  33. Joceline Castillo-Ayala, LVNSanta Maria, CA 934551114623279
  34. Genesis Castillo-Jimenez, RNSan Francisco, CA 941151093640328
  35. Mariah CastleberryRidgecrest, CA 935551124897947
  36. Maria CastorenaLos Angeles, CA 900221083248801
  37. Michelle Castrillo, REGISTERED NURSEFairfield, CA 945331336927235
  38. Sheila CastrilloEast Palo Alto, CA 943031346622263
  39. Carina CastroFresno, CA 937021669948246
  40. Favian Castro, RNSuisun City, CA 945851194114819
  41. Giuseppe Castro, REGISTERED NURSEMoreno Valley, CA 925571720677321
  42. Kimberly Castro, RNVictorville, CA 923921336737089
  43. Meryl CastroGrover Beach, CA 934331730822792
  44. Rose Ann CastroEl Monte, CA 917321437748605
  45. Ruddy CastroWest Covina, CA 917911972425445
  46. Shaneerae CastroSan Francisco, CA 941021285284828
  47. Sheryl CastroSan Francisco, CA 941021477191831
  48. Tracey Castro, RNSan Diego, CA 921101568710788
  49. Coralou Flerida Fe Casuela, RNOakland, CA 946011952635187
  50. Eder Catalan, RNSanta Barbara, CA 931101407210735

Source: CMS NPPES, primary taxonomy 163W00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 30 of 51 per resident

  1. Maryland40
  2. Arkansas40
  3. Oklahoma36
  4. California35
  5. Kansas34
  6. South Carolina33
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 163W00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

2.5% of these records appear in a Medicare file, against 1.5% 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. California2.5%
  2. United States1.5%

Registered Nurse records in California, measured

  • In a Medicare file343 of 13,506 · 2.5% here, 1.5% nationally
  • In the CMS Doctors and Clinicians file146 · 1.1% here, 1.0% nationally
  • Not updated in five years or more7,263 · 53.8% here, 57.2% nationally
  • Median graduation year2018 · the 146 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 163W00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

13,506 NPPES records list registered nurse (163W00000X) as their primary taxonomy with a practice address in California: 35 per 100,000 residents against 44 nationally (50 states and D.C.). San Diego has 1,223 of them (9%).

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. Ohio9,656
  2. Texas8,921
  3. Washington5,708
  4. Michigan5,589

States with a similar rate per 100,000

  1. Kansas33.9
  2. Oklahoma35.9
  3. South Carolina32.8
  4. Vermont31.0

The largest states

  1. New York25,740
  2. Ohio9,656
  3. Texas8,921
  4. Washington5,708
  5. Michigan5,589

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.