NPPES file of Aug 9, 2026

Nurse Practitioner in California

8,223 NPPES records list nurse practitioner with a practice address in California, 21 per 100,000 residents, the 41st highest rate of 51. Stanford and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 89 of 165.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363L00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Stanford has the most, 572

  1. Stanford572
  2. Los Angeles520
  3. San Diego458
  4. San Francisco425
  5. Palo Alto318

Nurse Practitioner records in California

  1. Julita Luty, NPSan Jose, CA 951101518202621
  2. Clarence Ly, NPUpland, CA 917861356154595
  3. Ellen Ly, NPArcadia, CA 910071215539820
  4. Hoa Ly, NPLos Angeles, CA 900011770139461
  5. Kim LySan Francisco, CA 941431710574637
  6. Lynn Ly, NPBaldwin Park, CA 917061154809804
  7. Phuong Ly, NPStanford, CA 943051932071917
  8. Alexey Lyapin, FNP-CStanford, CA 943051881070407
  9. Emily Lynch, FNP-CSanta Rosa, CA 954011366045437
  10. Joseph Lyon, NPStanford, CA 943051922401819
  11. Susan Lyon, NURSE PRACTITIONERSan Diego, CA 921261043462690
  12. Kelly Lyons, N.P.Apple Valley, CA 923081538413877
  13. Kristin Lyons, FNPEncinitas, CA 920241720720634
  14. Laura Lyons, A.R.N.P.McKinleyville, CA 955191174693436
  15. Claudine Ma, MSN NPSan Bernardino, CA 924041689281594
  16. Xiaojuan MaSan Diego, CA 921031861161366
  17. Xiaowei Ma, NP-CLos Angeles, CA 900331841762903
  18. Anna Marie Maagdenberg, NPSouth San Francisco, CA 940801386978542
  19. Maria Ellaine Maala, NPStanford, CA 943051932609260
  20. Hardeep MaanMadera, CA 936371457751190
  21. Peter Maanao, NPCarmichael, CA 956081154026425
  22. Ronaldo Mabagos, RNSan Francisco, CA 941141497394753
  23. Joel Macasero, NPModesto, CA 953501770914202
  24. Christine Macasieb, N.P.San Francisco, CA 941431760798763
  25. Sashana Macatangay, NP-CLos Angeles, CA 900481922564590
  26. Karen Macauley, CFNPSan Diego, CA 921031992756621
  27. Lisbeth Macdonald, RN, FNPVallejo, CA 945891699837724
  28. Samona Macdonald, FNPSacramento, CA 958161346234556
  29. Courtney Macdowell, DNPPalo Alto, CA 943041689336547
  30. Elizabeth Macera, N.P.San Leandro, CA 945771003979295
  31. Estefania Macias, FNPFrench Camp, CA 952311649949876
  32. Christina MacielAtascadero, CA 934221194472506
  33. Rachel Maciel, FNPLong Beach, CA 908401750441259
  34. Rebecca Macisaac, NURSE PRACTITIONERLivermore, CA 945501205018744
  35. Brian Mack, FNP-CSan Francisco, CA 941111063979128
  36. Jonathan Mack, N.P.San Diego, CA 921111922230747
  37. Kwaifa Mack, DNP, FNP-CBakersfield, CA 933011447312202
  38. Clarisse Mackay, FNP-CVista, CA 920811235992736
  39. Amy MackeRedwood City, CA 940631710333216
  40. Sharol Mackie, FNPRedding, CA 960011750580544
  41. Sandra Mackiney, NP-CVisalia, CA 932911083943799
  42. Sarah Maclachlan, FNPSan Francisco, CA 941431972540946
  43. Jane Maclean, NPLakeport, CA 954531649480450
  44. Jennifer Maclean, NPPalo Alto, CA 943041235565177
  45. Laura Macmanus, NPBanning, CA 922201255581112
  46. Julianne Macmullen, FNPVisalia, CA 932771053044107
  47. Lisa Madala, NPFresno, CA 937201841203692
  48. Pamela Madala, FNPHanford, CA 932301225170541
  49. Mary Madden, NPPalm Desert, CA 922111700201043
  50. Jesahel Madfes, FNPSan Francisco, CA 941581982990792

Source: CMS NPPES, primary taxonomy 363L00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 41 of 51 per resident

  1. Alaska22
  2. Colorado21
  3. New Jersey21
  4. California21
  5. Louisiana20
  6. Maryland20
  7. 50 states and D.C.29

Source: CMS NPPES, primary taxonomy 363L00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

65.3% of these records appear in a Medicare file, against 73.4% 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. California65.3%
  2. United States73.4%

Nurse Practitioner records in California, measured

  • In a Medicare file5,368 of 8,223 · 65.3% here, 73.4% nationally
  • In the CMS Doctors and Clinicians file3,427 · 41.7% here, 57.4% nationally
  • Not updated in five years or more3,696 · 44.9% here, 44.6% nationally
  • Median graduation year2017 · the 3,425 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363L00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

8,223 NPPES records list nurse practitioner (363L00000X) as their primary taxonomy with a practice address in California: 21 per 100,000 residents against 29 nationally (50 states and D.C.). Stanford has 572 of them (7%).

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. Florida8,844
  2. Illinois4,892
  3. Texas4,825
  4. North Carolina4,524

States with a similar rate per 100,000

  1. New Jersey21.1
  2. Colorado21.4
  3. Alaska21.5
  4. Louisiana20.4

The largest states

  1. Florida8,844
  2. Illinois4,892
  3. Texas4,825
  4. North Carolina4,524
  5. Ohio4,254

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.