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 161 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. John Virgil MesiaEl Cerrito, CA 945301235893835
  2. Marlon Mesias, RNAnaheim, CA 928041467149054
  3. Marzel MesiasLoma Linda, CA 923501770476749
  4. Etahl Mesika(messica), RNSanta Barbara, CA 931101427448661
  5. Jonathan Mesina, RNMarch Arb, CA 925181780166900
  6. Socorro MesinaSan Diego, CA 921011528355286
  7. Diane Mesones, RNBerkeley, CA 947201043552938
  8. Megan Messersmith, RNTorrance, CA 905011700748076
  9. Tim MessmerColton, CA 923241023489994
  10. Nina MetanatFremont, CA 945361265739205
  11. Marjorie MetellusPalmdale, CA 935501689250490
  12. Gabrielle MetottHayward, CA 945451396586525
  13. Lesley Metoyer, RNLong Beach, CA 908221922356559
  14. Linda Metz, RNSan Rafael, CA 949011932349925
  15. Crystal Metzig, R.N.Chula Vista, CA 919111316345945
  16. Debra Meulstee, RN BSNMoreno Valley, CA 925531972485365
  17. Andrea Meyer, RNSanta Cruz, CA 950621891126280
  18. Jeannette Meyer, RN, CNSSanta Monica, CA 904041841912441
  19. Katrina Meyer, RN, BSN, PHNSan Diego, CA 921011730675208
  20. Rashael Meyer, RNFairfield, CA 945331942762885
  21. Denise Meyers, RNFresno, CA 937051306147152
  22. Amy Meza, RNWatsonville, CA 950761619000536
  23. Christine MezaColton, CA 923241427588813
  24. Ryan MezaColton, CA 923241598214546
  25. Patricia Meza-OchoaLong Beach, CA 908101558860734
  26. Shana Mezzanatto, RNVista, CA 920811013176486
  27. Felicia Mgbojikwe, RNSan Diego, CA 921011053612242
  28. Jennielee Mia, RNMcKinleyville, CA 955191205656816
  29. Rafaqat Mian, RNLodi, CA 952401154479319
  30. Stephanie Miano, RNOntario, CA 917621508511759
  31. Rezene Michael, RNSan Diego, CA 921111316378227
  32. Nicanor Michel, RNSan Diego, CA 921101023990017
  33. Pamela Michel, RNStanton, CA 906801922776707
  34. Joan Michelotti, RNModesto, CA 953501730415571
  35. Joanna Michler, WHNPOakland, CA 946181831078088
  36. Tara MicichLos Angeles, CA 900161174480719
  37. Ann Mickadeit, RNSanta Barbara, CA 931101528727492
  38. Theresa MicklesOrange, CA 928681316763949
  39. Milena Micu, RNRocklin, CA 957651225653470
  40. Chelie Middleton, RNSanta Fe Springs, CA 906701720127210
  41. Jessica Middleton, RNSan Francisco, CA 941101215423108
  42. Mary Middleton, R.N.Nevada City, CA 959591619015344
  43. Mark MidgetColton, CA 923241013550664
  44. Jocelyn MielValencia, CA 913551104748128
  45. Diane MiesslerGrass Valley, CA 959451639530363
  46. Melissa Migdal, LAC, RNAlbany, CA 947061992035745
  47. Zasha MiguelRedwood City, CA 940621134007354
  48. Louis MihaiSacramento, CA 958171609613397
  49. Mark MijaresFairfield, CA 945331033530076
  50. Natalia MikhailSan Diego, CA 921071689497398

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.