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 180 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. Jaye Obana, RNSan Diego, CA 921611538364666
  2. Iloegbe Obasogie, RNSan Diego, CA 921011699001479
  3. Bolaji ObasuyiManteca, CA 953361972447993
  4. Aline ObdianelaSan Diego, CA 921581225746019
  5. Cecilia ObergAnaheim, CA 928081861819336
  6. Tamura OberkramerPlacentia, CA 928701518896935
  7. Taylor Oberlander, RNMontebello, CA 906401114537800
  8. Linda Obi, FNPPittsburg, CA 945651942916945
  9. Stephanie ObialisiLong Beach, CA 908101972078574
  10. Chioma Obidike, RNCarson, CA 907461427918796
  11. Christina ObikeColton, CA 923241326911611
  12. Nneoma ObinnaMoreno Valley, CA 925551033099171
  13. Sandra ObitteFresno, CA 937111033981840
  14. Edward Frederick Obmina Josue, RNSan Jacinto, CA 925831669227138
  15. Harriet Obrien, RNSan Diego, CA 921231831279140
  16. Michael Obrien, RNLoomis, CA 956501538563010
  17. Carla Obrien-JaySanta Rosa, CA 954091588932107
  18. Justin Ocampo, RN BSNRiverside, CA 925051992627210
  19. Lauren Ocampo, RNCardiff, CA 920071043000268
  20. Sergio OcampoColton, CA 923241942730346
  21. Valerie OcampoSan Jose, CA 951261851149017
  22. Toia Ocansey, RNSan Diego, CA 921011124375324
  23. Ana Ocegueda, RNArcata, CA 955211124418801
  24. Edna OchoaOakland, CA 946121578173423
  25. Griselda OchoaNapa, CA 945581801438817
  26. Jake Ochsner, RNCosta Mesa, CA 926271215660048
  27. Francis OconLos Angeles, CA 900101255158069
  28. Carolyn Oconnor, RNFairfield, CA 945331164812947
  29. Dorcas OcranColton, CA 923241821794074
  30. Maria Jennifer OcularMartinez, CA 945531457736654
  31. Christine Odhiambo, RNBeaumont, CA 922231720638810
  32. Sarah OdhiamboCorona, CA 928831073000196
  33. Mar Joseph Odias, RN, MSN, PHN, CNLSan Jose, CA 951111326572959
  34. Christiana Odimba, RNPalmdale, CA 935521437746955
  35. Isaiah Odjegba, RNLos Angeles, CA 900381285963082
  36. Emily Odle, RNChico, CA 959731316591530
  37. Vanessa Odom, RN, IBCLCAliso Viejo, CA 926561598588782
  38. Caitlin OdonnellSanta Barbara, CA 931101780415620
  39. Cheryl Offerding, REGISTERED NURSEBakersfield, CA 933091710496153
  40. Leana OffrilCastro Valley, CA 945781174441521
  41. Tara Oflaherty, Bsn, Rn, PhnBerkeley, CA 947051699694612
  42. Sarah OfodireMather, CA 956551780530204
  43. Jashanda Ogaldez-RobinsonIndio, CA 922011740100528
  44. Festus Ogbeide, RNWasco, CA 932801053722538
  45. Osaretin Ogbeni, RNLos Angeles, CA 900261972263473
  46. Joy OgbonnaLong Beach, CA 908101750867065
  47. Kenechi OgbuchiekweRiverside, CA 925081497513980
  48. Victor OgegaJurupa Valley, CA 917521750037743
  49. Nonye OgoamakaSanta Barbara, CA 931101114283363
  50. Grace OgunkunleColton, CA 923241780356808

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.