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 184 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. Joseph OrtegaMartinez, CA 945531083006464
  2. Miguel OrtegaColton, CA 923241336031285
  3. Priscilla Ortega, RNUpland, CA 917861811443328
  4. Stephanie OrtegaAnaheim, CA 928021780459149
  5. Abner Ortiz, RNSan Diego, CA 921101225847254
  6. Alice Ortiz, RNRialto, CA 923761376933564
  7. Chidinma Ortiz, RNLivermore, CA 945511346905288
  8. Colleen Ortiz, RNSan Diego, CA 921041336754118
  9. Ernest Ortiz, RNSalinas, CA 939071780505818
  10. Maria OrtizHuntington Park, CA 902551174334239
  11. Norma Ortiz, R.N.El Cajon, CA 920201871924878
  12. Tabitha OrtizManteca, CA 953361982254322
  13. Maria Ortiz-Luis, RNLong Beach, CA 908051902089360
  14. Bertrams Osajindu, RN BSNWoodland, CA 956951104445709
  15. Mabel Osamor, RNSan Pablo, CA 948061609353119
  16. Deneb OsanoColton, CA 923241942537386
  17. Jamey Osborn, RN, BSNSan Diego, CA 921011568860559
  18. Lisa OsbornBakersfield, CA 933041295525186
  19. Shannon Osborn, RNGrass Valley, CA 959451598681207
  20. Tatiana OsbornePerris, CA 925701164384954
  21. Acheampomaa Osej-DonkorSan Francisco, CA 941071558236919
  22. Divine OsephodeCapitola, CA 950101336986066
  23. Nicholas Osher, RNLos Angeles, CA 900461548521347
  24. Kristine OshinsNorthridge, CA 913251740891464
  25. Akorede Oshunluyi, RNLong Beach, CA 908061598307670
  26. Veneth Osman, LVNSacramento, CA 958241639683717
  27. Francine Osorio, RNSanta Ana, CA 927041487191052
  28. Shamika Ossey, RNLos Angeles, CA 900101396392478
  29. Dennis Ostmeyer, RNSan Diego, CA 921261245598572
  30. Lillian OstromFresno, CA 937031699697714
  31. Julia OstromogilskayaSan Diego, CA 921111265056824
  32. Helen OsunaSan Francisco, CA 941031689437188
  33. Vivian Osunde, RNChula Vista, CA 919141366110470
  34. Chukwuka Osuorji, RNSan Leandro, CA 945781598198244
  35. Corrine OtienoMurrieta, CA 925631386464501
  36. Dorothy OtienoClaremont, CA 917111871313395
  37. Norah OtienoHercules, CA 945471003735770
  38. Litzuly Otlica, RNEast Palo Alto, CA 943031205672094
  39. Karen OttSanta Rosa, CA 954041528112141
  40. Kimberly OttSanta Cruz, CA 950621841883600
  41. Marissa Ottesen, RNSanta Cruz, CA 950601649853896
  42. Jordan Otto, RNSanta Cruz, CA 950601659894301
  43. Ijeoma OtuechereRiverside, CA 925081003529819
  44. Genevieve Otuonye, REGISTERED NURSELoma Linda, CA 923571598465361
  45. Fabienne Ouapou-Lena, RNKeyes, CA 953281780519660
  46. Amanda Ouellette WilliamsLong Beach, CA 908071033939103
  47. Rona OughinRohnert Park, CA 949281861608796
  48. Alida Outman, R.N.Hollister, CA 950231245572635
  49. Yasna OuwerkerkTorrance, CA 905021043383904
  50. Bryan OvallesFresno, CA 937031164342358

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.