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 150 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. Janice MariblancaLong Beach, CA 908151124896733
  2. Michael Marick, REGISTERED NURSECosta Mesa, CA 926271710623707
  3. Nivetha Marie Joseph, RNOakland, CA 946091003708595
  4. Michelle MarinSan Jose, CA 951261063187821
  5. Yellena Marin, RNSanta Ana, CA 927061336808310
  6. Guadalupe Marin Giraldo, R.N.Napa, CA 945581699008292
  7. Betzabel Marin Santamaria, RNSanta Ana, CA 927011487276218
  8. Margarita Marines PantzloffWatsonville, CA 950761528731494
  9. Sana Marini, RNTorrance, CA 905051770226011
  10. Athena Marinos, RNEl Cajon, CA 920191396460283
  11. Tatevik MarkaryanGlendale, CA 912051013337732
  12. Allison Markel, RNOakland, CA 946091578243382
  13. Ann Marker, RNClaremont, CA 917111144628405
  14. Patrick Markey, R.N.Ventura, CA 930031043519283
  15. Carolyn Markham, R.N.Ventura, CA 930031063841930
  16. Judith Markham, RN, IBCLCFallbrook, CA 920281962223792
  17. Theresa Markle, R.N.San Francisco, CA 941091558438374
  18. Heather Markowitz, RNStanford, CA 943051760276158
  19. Ruth MarksNewhall, CA 913211720162647
  20. Stephanie MarksColton, CA 923241124531744
  21. Susan Marks, RNSacramento, CA 958331891228854
  22. Terri Marlett, RNBrentwood, CA 945141255386488
  23. Elizabeth Marois, RNRohnert Park, CA 949281114803111
  24. Lori Marold, RNSan Diego, CA 921011568790004
  25. Victoria Marone, RNAnaheim, CA 928071346789799
  26. Christina Marquez, L.V.N., R.N.Pico Rivera, CA 906601538611769
  27. Kozue MarquezSanta Barbara, CA 931101548639180
  28. Maria MarquezLong Beach, CA 908101396403838
  29. Phaedra Marquez, RNFresno, CA 937281770811812
  30. Rameses Marquez, RNFresno, CA 937201932070802
  31. Ronald Marquez, RNEl Cajon, CA 920211558250589
  32. Naomi Marquez-ToulemondeSanta Cruz, CA 950601013542927
  33. Ashley Marr, BSN, RNPalo Alto, CA 943041457107500
  34. Krista Marrazzo, RNGilroy, CA 950201396189841
  35. Jeanette MarreroRohnert Park, CA 949281255287736
  36. Darcy Marrison, RNBerkeley, CA 947201780933663
  37. Melissa Marrs-Luna, FNP-BCHuntington Beach, CA 926481376378786
  38. Candace MarshallSan Francisco, CA 941051043987878
  39. Catalily Marshall, RNBerkeley, CA 947201750972089
  40. Diane MarshallPasadena, CA 911071376911834
  41. Julianna MarshallVentura, CA 930011336931443
  42. Juliette Marshall, RNHayward, CA 945451174364327
  43. Mary Marshall, RNChula Vista, CA 919111497003867
  44. Susannah Marshall, RNSanta Rosa, CA 954041770359663
  45. Tricia MarshallSan Ramon, CA 945831275183832
  46. Janice Marston, BSN, RN, PHNSacramento, CA 958231093901019
  47. Nicole MartSan Marcos, CA 920691154910255
  48. Sasha Martell, RNBrawley, CA 922271528907797
  49. Valeria Martell Balderrama, RNBakersfield, CA 933011174341150
  50. Gabriella Martens, RNPalo Alto, CA 943011982437604

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.