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 212 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. Marco Floro Roxas, RNSanta Ana, CA 927011609589068
  2. Mareille Anne RoxasRedwood City, CA 940621851962377
  3. Michael RoxasSan Francisco, CA 941101427411909
  4. Teresita RoxasOceanside, CA 920571275231649
  5. Camille Roy, RNCastro Valley, CA 945781093637399
  6. Georgia Royce, RNFairfield, CA 945331417425901
  7. John Royce, RNLong Beach, CA 908221801980263
  8. Cynthia Royola-Alford, RNMerced, CA 953411417138645
  9. Jewel Royston, REGISTERED NURSESacramento, CA 958201093424954
  10. Randye RoystonSanta Rosa, CA 954041871640474
  11. Isela Ruacho, REGISTERED NURSESanta Ana, CA 927011841976867
  12. Mayra RuanoColton, CA 923241326926973
  13. Ruby RuanoWest Sacramento, CA 956051518707793
  14. Jeffrey RubalcavaAnaheim, CA 928011124416490
  15. Monique Rubalcava-RodriguezColton, CA 923241871288175
  16. Fe RubianoTemecula, CA 925921205252871
  17. Nicolas Rubinstein, RNSylmar, CA 913421972355980
  18. Christian Rubio, RNBuena Park, CA 906201568393759
  19. Joyce RubioLos Angeles, CA 900141053288902
  20. Monica Rubio, RNSan Diego, CA 921021548579741
  21. Debra Rubio-Derhammer, F.N.P.Yosemite Natl Pk, CA 953891497860852
  22. Maria Rubio-Esteban, RNBakersfield, CA 933091497885917
  23. Stephanie Ruble, RNFresno, CA 937371104291749
  24. Teresa Rucker, REGISTERED NURSERio Vista, CA 945711851734248
  25. Augustin RucoboSan Diego, CA 921101821581836
  26. Janet Rudd, RN, BSNRedding, CA 960021003279233
  27. Nuala Ruddell, RNBerkeley, CA 947041316134596
  28. Susan RuddickUkiah, CA 954821154725984
  29. Halona Rude, RNArcata, CA 955211114328887
  30. Joanna Rudin, RN-BSNRedondo Beach, CA 902771568051241
  31. Caroline Rudio, RNLos Angeles, CA 900731700712031
  32. Gwendolyn Rudulph, RNRidgecrest, CA 935551598535932
  33. Cassandra Rue, RNSan Diego, CA 921081467105494
  34. Cyril May RuecaPalo Alto, CA 943041427569482
  35. Staci Rueh, RNBakersfield, CA 933061447549316
  36. Raquel RuffRiverside, CA 925031164895116
  37. Oziel Ruffo, RNSanta Barbara, CA 931101710625355
  38. Riccardo Ruggiero, REGISTERED NURSEOrange, CA 928671720575590
  39. Andrea Ruiz, RNOakland, CA 946011437005972
  40. Barbara RuizFresno, CA 937211447470901
  41. Cynthia Ruiz, RNAlhambra, CA 918031285513937
  42. Cynthia Ruiz, RNSanta Rosa, CA 954041083905293
  43. Ferdinand RuizSan Diego, CA 921011235994690
  44. Iskra RuizSan Diego, CA 921131669069423
  45. Jean Andre Martin Ruiz, RNEscondido, CA 920291427640218
  46. Jennifer Ruiz, RNSanta Ana, CA 927061710597117
  47. Johanna Ruiz, RN, PHN, MSNLakeport, CA 954531669862033
  48. John Ruiz, RN, BSN, PHNRialto, CA 923761871329888
  49. Keisha Ruiz, RN, PHNIndio, CA 922011386401545
  50. Lucio RuizLoma Linda, CA 923571427901438

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.