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 154 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. Ioulia Matyssik, RNRedwood City, CA 940631063543304
  2. Lindsey MauldinSalinas, CA 939061871191627
  3. Jacinda Maurer, RNCapitola, CA 950101104103399
  4. Rebecca Maurer, RNSacramento, CA 958411538824453
  5. Stephanie MauricioLos Angeles, CA 900061346979416
  6. Briana MauroLa Mesa, CA 919421871361410
  7. Kate Maxino, RNRiverside, CA 925061275217671
  8. Amanda MaxwellLos Angeles, CA 900121649110800
  9. Christy Maxwell, RNFresno, CA 937031295526754
  10. Marom MayPlacentia, CA 928701275386914
  11. Tracy May, RN, CRNAOrange, CA 928681215446901
  12. Giovanni MayaCeres, CA 953071275958829
  13. Jennifer MayaSanta Ana, CA 927011679035604
  14. Nathalie Maya, R.N.Napa, CA 945581841639895
  15. Susan MayberryFairfield, CA 945331760835813
  16. Habibulla Mayer, RNSan Diego, CA 921101962533935
  17. Hannah MayerRocklin, CA 956771982421939
  18. Meghan Mayer, RNSan Diego, CA 921201720777329
  19. Nazaneen MayerSan Diego, CA 921011073158713
  20. Theresa Mayer, RNLoma Linda, CA 923571851212450
  21. Susan MayhewSanta Rosa, CA 954041669615571
  22. Samantha Mayo, RN, BSNSan Diego, CA 921081639930852
  23. Terry Mayo, RNSan Diego, CA 921051760749709
  24. Nina Mays, REGISTERED NURSESanta Ana, CA 927031508016478
  25. Valeishia Mays, RNSan Diego, CA 921541407234925
  26. Cheryl Maytubby, RNFountain Valley, CA 927081396127817
  27. Benilda MayugbaFresno, CA 937211730385857
  28. Karen Mayville, RNWillow Creek, CA 955731093071417
  29. Allison MazurOrange, CA 928681851267249
  30. Rosemary MazurBakersfield, CA 933121225967144
  31. Yulia MazurLaguna Niguel, CA 926771083145130
  32. Joseph Mazzullo, PMHNPBakersfield, CA 933121023599230
  33. Idorenyin Mbeke-EkanemFontana, CA 923361043152291
  34. Offiong Mbeke-Ekanem, RNFontana, CA 923361932066313
  35. Joyce MbelaLancaster, CA 935351457125486
  36. Sarah Mbiri, RNPomona, CA 917661770210981
  37. Felista MbogoDiamond Bar, CA 917651104705300
  38. Mary Mbolo, RNLancaster, CA 935361457166308
  39. Mary Mbugua, REGISTERED NURSEAnaheim, CA 928021700200243
  40. Annmary Mbui, RNSan Jacinto, CA 925821518645654
  41. Mary Mburia, RNEastvale, CA 928801275286320
  42. Annet Mburu, RNRiverside, CA 925031407544430
  43. Leah MburuDiamond Bar, CA 917651366272916
  44. Sammy MburuFolsom, CA 956301003514449
  45. Anne MbuthiaBeaumont, CA 922231912694225
  46. Linda Mc Donald, RNSan Diego, CA 921101437236080
  47. C Mc Laughlin, RNSan Diego, CA 921201649413626
  48. Renee McAdoo, RNFresno, CA 937251831841600
  49. Nancy McAllister, RNSan Diego, CA 921101255837506
  50. Susan McArthurBakersfield, CA 933061316483886

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.