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 181 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. Prayer Ogunsuyi, RNSacramento, CA 958201588000558
  2. Helen OgwoOntario, CA 917611629963350
  3. Anna Oh, PHD, MPH, RNPalo Alto, CA 943051942179593
  4. Eric OhBrea, CA 928211124805247
  5. Linda OhSanta Maria, CA 934551912479486
  6. Mark OhColton, CA 923241629604491
  7. Ryan OhColton, CA 923241821804907
  8. Seran OhLos Angeles, CA 900201225957525
  9. Yesul OhPorter Ranch, CA 913261871389403
  10. Chidi OhaneleConcord, CA 945201043566227
  11. Omozele OiyemhonlanSacramento, CA 958251538851035
  12. Ebele OjinmahPomona, CA 917681174281687
  13. Matthew Ojo, RNCoalinga, CA 932101033760517
  14. Eva OkatchaCorona, CA 928831063861441
  15. Chizobam Okeke, RN, BSN, PHNLong Beach, CA 908021740589068
  16. Gabriel OkekeColton, CA 923241518138171
  17. Sarah OkemwaTurlock, CA 953821568205474
  18. Mecy Okenwa, RNSan Diego, CA 921011174876551
  19. Thelma Okere, RNSacramento, CA 958351508111386
  20. Fiona OkerekeInglewood, CA 903031487930970
  21. Melinda Okimoto, REGISTERED NURSELong Beach, CA 908221336241231
  22. Stella Okolo, REGISTERED NURSECulver City, CA 902321316397813
  23. Natasha Okonkwo, DNP, RNSherman Oaks, CA 914231972475085
  24. Ejere Okorie, RNRialto, CA 923761528816097
  25. Winner OkorieLos Angeles, CA 900151952121394
  26. Gillian OkoyeBakersfield, CA 933061275876302
  27. Vasily Okulov, RNSan Diego, CA 921231043992365
  28. Xiaoping OkusanyaColton, CA 923241629730940
  29. Kahoru OkuyamaColton, CA 923241558919308
  30. Blessing Okwara, RNFontana, CA 923361841372422
  31. Christiana OkworColton, CA 923241376128736
  32. Ifeoma OkwuosaPerris, CA 925711861348229
  33. Jeffrey OkyereColton, CA 923241538744990
  34. Oludayo Oladipo, FNPOakland, CA 946121184265407
  35. Michael OladoSan Luis Obispo, CA 934011598480741
  36. Olatokunbo Olagbemi, RNSan Diego, CA 921101770768368
  37. Winifred Olajide, RNMira Loma, CA 917521174983860
  38. Carmela Olalia, RNLos Angeles, CA 900381336897255
  39. Marlon OlanoOrange, CA 928681780309484
  40. Marvin OlanoOrange, CA 928681194695437
  41. Regina OlashegeWest Hollywood, CA 900691790402840
  42. Christine Olayvar, RNFresno, CA 937031629882394
  43. Megan Oleary, RNLancaster, CA 935351194245597
  44. Gretchen Olejnik, RNPalo Alto, CA 943041194079558
  45. Precious OleleweBellflower, CA 907061386582013
  46. Breanna Olgin, R.N.Bakersfield, CA 933011538551650
  47. Roselle Oli, RNSantee, CA 920711225899701
  48. Frances Oliden, RNSan Mateo, CA 944031760661169
  49. Chuks Olise, RNVisalia, CA 932921689931362
  50. Audrianna OlivaSan Diego, CA 921261710591482

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.