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 50 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. Ivy Constantino-BonillaSan Francisco, CA 941211558208389
  2. Idris ContehCampbell, CA 950081750799979
  3. Jeffrey Conti, RNSan Diego, CA 921101114532629
  4. Ashley ContrerasSanta Barbara, CA 931101023833761
  5. Marianne ContrerasMerced, CA 953411063954691
  6. Matthew Contreras, RNSan Diego, CA 921011639852734
  7. Rita Contreras, RNSanta Cruz, CA 950621841914009
  8. Sylvia ContrerasGreenfield, CA 939271134062680
  9. Valentina Contreras, RNOakland, CA 946071336982651
  10. Vanessa ContrerasTemecula, CA 925901225797772
  11. Elizabeth Conway, RNSacramento, CA 958241528200680
  12. Whitney Conway, RNSanta Maria, CA 934551083238497
  13. Phillip Conwell, CRNAFort Bragg, CA 954371255540340
  14. Eva CoocCastro Valley, CA 945461679346399
  15. Jane Cook, RNIndio, CA 922031639416373
  16. Lauren Cook, R.N.Thousand Oaks, CA 913601306262399
  17. Pamela CookColton, CA 923241376787879
  18. Regina CookBakersfield, CA 933061093270407
  19. Roberta CookSan Diego, CA 921031417509423
  20. Ronda Cook, REGISTERED NURSEChula Vista, CA 919111053825398
  21. Spencer CookSanta Clara, CA 950511952135360
  22. Thao CookPacifica, CA 940441538013693
  23. April Cooke, RNSonoma, CA 954761376107805
  24. Jennifer Cooke, RNVentura, CA 930011790659027
  25. Jennifer Cooke, R.N.Oakland, CA 946091588007025
  26. Charlene Cooley Williams, RN,PHNSan Leandro, CA 945771578454559
  27. Susan Coolidge, R.N.Sacramento, CA 958261811908767
  28. Lisa Coonrod, RN, BSNMentone, CA 923591356530786
  29. Graham CoopVentura, CA 930031528254216
  30. Alyce CooperSan Diego, CA 921201740408467
  31. Christina CooperSan Diego, CA 921101598516700
  32. Claudia CooperSan Francisco, CA 941101154863330
  33. Jessica Cooper, RNArcata, CA 955211457722951
  34. Julie Cooper, R.N.Vacaville, CA 956881487715710
  35. Maria CooperSan Diego, CA 921011952070724
  36. Nicholas Cooper, RNSan Diego, CA 921031932925831
  37. Rena CooperFresno, CA 937021023710035
  38. Sherrie Cooper, RN, BSN, PHNFairfield, CA 945331255904355
  39. Vron Cooper, RNTruckee, CA 961611477274736
  40. Christine Cooperman, RNEncinitas, CA 920241063000826
  41. Susan Coopersmith, R.N.Greenbrae, CA 949041871818799
  42. Haylee CoopmanRedding, CA 960011730807835
  43. Nicole Copeland, RN, MSNSan Francisco, CA 941021205270113
  44. Peggy Coppin, RNCarmichael, CA 956081104953900
  45. Christine CoppolaSan Mateo, CA 944031386775864
  46. Pio Carmelo Coquia, RNSanta Ana, CA 927011407488554
  47. Jennifer Corbett, R.N.Upland, CA 917861144528365
  48. John CorbettOakland, CA 946021316404684
  49. Monica Corbin, RNSan Francisco, CA 941161720803166
  50. Rosemary Corcoran, RNArcata, CA 955211114689924

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.