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 225 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. Kari O'Donnell, MSN, RN, FNP-CEncino, CA 913161083550065
  2. Katie O'Donnell, APRN, FNP-BCSacramento, CA 958171346971637
  3. Margaret O'Donnell, FNP-CMission Viejo, CA 926911619796141
  4. Nicole O'Donnell, NPCarlsbad, CA 920091043708456
  5. Kyle O'HaraNapa, CA 945591881055283
  6. Gabrielle O'KeefeSan Diego, CA 921611053789438
  7. Renae O'Keeffe, NPIsla Vista, CA 931171871827295
  8. Kathy O'Kelley, NPLadera Ranch, CA 926941801107313
  9. Diane O'Laughlin, RN, PHN, FNPElk Grove, CA 957581245505767
  10. Jean O'Neil, NPGlendale, CA 912081134273675
  11. Celeste O'NeillSanta Monica, CA 904011457194672
  12. Diana O'Neill, NPSan Francisco, CA 941431184975849
  13. Elizabeth O'Neill, FNPSan Diego, CA 921611528670221
  14. John O'Neill, FNPForest Falls, CA 923391346946571
  15. Catherine O'Neill-Conover, NPCarlsbad, CA 920091033147582
  16. Zachary O'NellMurrieta, CA 925621972488872
  17. Lanni O'Reilly, APRN, FNP-BCSan Bernardino, CA 924051962252114
  18. Maureen O'Rourke, N.P.Santa Barbara, CA 931101831295658
  19. Michelle O'Rourke, FNP-CSacramento, CA 958171043408800
  20. Tracey O'Shea, FNPBerkeley, CA 947051508201443
  21. Dianna Oakes, FNP-BCRiverside, CA 925031437906799
  22. Carly Oakley, FNPCosta Mesa, CA 926261831824994
  23. Nancy Oakley, CFNPChino Hills, CA 917091619902491
  24. Susan Oase, RN, FNPStockton, CA 952101801971783
  25. Andrea OatesOroville, CA 959661417884669
  26. Adetoun Obadofin, NPWalnut Creek, CA 945981841964087
  27. Sarah Obaid, NPIrvine, CA 926181477387249
  28. Jennifer Obana, CRNPSan Diego, CA 921231114368628
  29. Jennifer Obando Alvarado, NPMoreno Valley, CA 925571770304727
  30. Femi Obanor, FNP-BCFresno, CA 937261225547359
  31. Uzezi ObarohCarson, CA 907451962862813
  32. Kathleen Ober, PH.D, FNPSan Diego, CA 921611780632000
  33. Ida Obeso-Martinez, FNPEl Centro, CA 922431831629252
  34. Chukwuemeka ObiWoodland Hills, CA 913641336945237
  35. Chinwe Obi-CanbyLynwood, CA 902621245757186
  36. Stephanie Obiako, NPNorthridge, CA 913251750575593
  37. Constance Obialisi, DNPSherman Oaks, CA 914111730712050
  38. Obidi ObienuLos Angeles, CA 900331780007179
  39. Mirian Obioha, DNP-FNPSacramento, CA 958411518734987
  40. Sara Obrien, NURSE PRACTITIONERBeverly Hills, CA 902121891522272
  41. Corinne Ocampo, MSN, FNP-BCSan Diego, CA 921611164073854
  42. Janell Ocampo, NPCerritos, CA 907031134513997
  43. Liza Mae Ocampo, FNP, FNP-BC, NP-CWest Covina, CA 917901164761193
  44. Neil Alden OcampoLakewood, CA 907151023712320
  45. Rio Ocampo, FNPLoma Linda, CA 923541679943054
  46. Tracy Ocampo, FNP-CWhittier, CA 906011649704115
  47. Virgilio Ocampo, FNP-DNPCamp Pendleton, CA 920551831591544
  48. Dianne Lyn Ocan, MSN, APRN, FNPOceanside, CA 920541184318305
  49. Prince Ocansey, FNPSan Bernardino, CA 924071164708640
  50. Jennifer Ocegueda, MSN, FNP-C, PHNEl Cajon, CA 920201184267411

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.