NPPES file of Aug 9, 2026

Family Nurse Practitioner in California

16,966 NPPES records list family nurse practitioner with a practice address in California, 44 per 100,000 residents, the 50th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 229 of 340.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363LF0000X · method

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

Los Angeles has the most, 1,103

  1. Los Angeles1,103
  2. San Diego799
  3. San Francisco662
  4. Sacramento444
  5. Fresno393

Family Nurse Practitioner records in California

  1. Diana Ong, NPTemecula, CA 925911285284760
  2. Karla Marie OngLos Angeles, CA 900481386270452
  3. Robert Terrill Ong, N.PRowland Heights, CA 917481407235237
  4. Madeleine Ong-Veloso, N.P.Victorville, CA 923951629027305
  5. Aliera Ongaco, FNP-CRiverside, CA 925031952245771
  6. Verlyn OngjocoElk Grove, CA 957581649033689
  7. Sandra Ongpian, RN FNP-CDaly City, CA 940151558238766
  8. Yasuko Ono, NPTorrance, CA 905051831878875
  9. Adaobi Onochie, MSN, APRN, FNP-BCSan Francisco, CA 941111376940254
  10. Ramil Onsik, NPGlendora, CA 917401366117558
  11. Leah Onstott, NPYuba City, CA 959931902133713
  12. Chidinma Onuigbo, NP-COntario, CA 917611104337419
  13. Obianuju OnwuasoanyaInglewood, CA 903011548975980
  14. Rosemary OnwukaLos Angeles, CA 900371154826089
  15. Uchenna Onwuli, NURSE PRACTITIONERCarson, CA 907461326412768
  16. Chioma Onyejekwe, DNPTorrance, CA 905051548701535
  17. Ijeoma OnyejijiCarson, CA 907461225630767
  18. Charles Onyeneke, NP-CLos Angeles, CA 900341740843309
  19. Ngozi OnyiaGardena, CA 902471992531214
  20. Ukamaka OnyiaFontana, CA 923361245008028
  21. Ukamaka Onyia, FNP-BCFresno, CA 937061346753019
  22. Tamara Ooms, FNPSan Francisco, CA 941101578583050
  23. Kathryn Opalenik, C.R.N.P.Roseville, CA 956611114191988
  24. Hunter Opanel, MSN, FNPHuntington Beach, CA 926491407677883
  25. Chinyere Opara, DNP, FNP-BCChula Vista, CA 919101083221683
  26. Johnelle Opel, NURSE PRACTITIONERSimi Valley, CA 930651871234369
  27. Olusola Opeseitan-Odumosu, NP-CMadera, CA 936371770148397
  28. Mary Ann Opoku, N.P.Los Angeles, CA 900341255790879
  29. Melinda Orbach, NPAptos, CA 950031275957078
  30. Karen Orbeta, DNP, FNP-CSan Andreas, CA 952491689456311
  31. Maria Jose Ordenana, RN FNPOrange, CA 928681063157352
  32. Glen Ordinario, NPMission Hills, CA 913451639465487
  33. Ron Ordona, NPLincoln, CA 956481184050171
  34. Jennifer Ordonio, FNP-CRancho Cucamonga, CA 917301801365713
  35. Phyllis Oreck, RN, FNP, MSNWoodland Hills, CA 913641023294873
  36. Laura Oregel, FNP-CModesto, CA 953501811592561
  37. Jessica Orellana, FNPHawthorne, CA 902501841008109
  38. Raziel Orias, NP-CSanta Fe Springs, CA 906701295530814
  39. Nolen Oribello, FNP-CNapa, CA 945581447093471
  40. Riza Oribio, NPSan Jose, CA 951161902579931
  41. Grace Origel, NPSouth Gate, CA 902801417059122
  42. Luis OrigelMission Hills, CA 913451447672696
  43. Nchegem Orji, NPLos Angeles, CA 900121053931469
  44. Theresa OrjiakorCarson, CA 907451528345667
  45. Catherine Orjuela, FNP-CSan Jose, CA 951381144717133
  46. Abiola OrkehHawthorne, CA 902501376056630
  47. Lillian Orlett, FNP-BCNational City, CA 919501306725270
  48. Stephanie Orloff, FNPSan Francisco, CA 941151689928368
  49. Alexandra Ornelas, NPLos Angeles, CA 900691639804404
  50. Christina Ornelas, NURSE PRACTITIONERSan Jose, CA 951381255166880

Source: CMS NPPES, primary taxonomy 363LF0000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 50 of 51 per resident

  1. Michigan53
  2. Washington48
  3. Wisconsin48
  4. California44
  5. New Jersey42
  6. 50 states and D.C.71

Source: CMS NPPES, primary taxonomy 363LF0000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

67.1% of these records appear in a Medicare file, against 75.1% 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. California67.1%
  2. United States75.1%

Family Nurse Practitioner records in California, measured

  • In a Medicare file11,379 of 16,966 · 67.1% here, 75.1% nationally
  • In the CMS Doctors and Clinicians file6,797 · 40.1% here, 57.1% nationally
  • Not updated in five years or more7,204 · 42.5% here, 40.5% nationally
  • Median graduation year2019 · the 6,793 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363LF0000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

16,966 NPPES records list family nurse practitioner (363LF0000X) as their primary taxonomy with a practice address in California: 44 per 100,000 residents against 71 nationally (50 states and D.C.). Los Angeles has 1,103 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. New York14,805
  2. Texas21,242
  3. Florida22,340
  4. Ohio9,647

States with a similar rate per 100,000

  1. New Jersey41.8
  2. Wisconsin47.6
  3. Washington48.4
  4. Michigan53.4

The largest states

  1. Florida22,340
  2. Texas21,242
  3. New York14,805
  4. Ohio9,647
  5. Tennessee9,060

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.