NPPES file of Aug 9, 2026

Physician Assistant in California

14,451 NPPES records list physician assistant with a practice address in California, 37 per 100,000 residents, the 41st 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 190 of 290.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363A00000X · 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, 935

  1. Los Angeles935
  2. San Diego747
  3. San Francisco488
  4. Stanford480
  5. Sacramento387

Physician Assistant records in California

  1. Michael Ocampo, PA-CLakewood, CA 907121265782528
  2. Payal Ocampo, PA-CWhittier, CA 906011700218427
  3. Christopher OchiengBurbank, CA 915051730757733
  4. Alison OchoaLaguna Woods, CA 926371962135004
  5. Andrew OchoaCerritos, CA 907031477197689
  6. Jay Ochoa, PAPalm Springs, CA 922621215887088
  7. Joseline OchoaAlhambra, CA 918031366175572
  8. Paula OchoaCoachella, CA 922361720697030
  9. Braulio Ochoa-Montal, PA-CPetaluma, CA 949541831741198
  10. Elizabeth Oconnor, PACWalnut Creek, CA 945981356598403
  11. Maria Oculam, PAPanorama City, CA 914021164581872
  12. Johanna Oda, PA-CLos Angeles, CA 900451255734265
  13. Kai OdaPalo Alto, CA 943031184575730
  14. Kevin Oda, PA-CWest Covina, CA 917901316584477
  15. Nneka Odeluga, CLS, PA-CBakersfield, CA 933091730357310
  16. Ogechukwu OdiakosaSanta Maria, CA 934541174356323
  17. Nancy Odonkor, PALos Angeles, CA 900591851689574
  18. Jester OdruniaSonora, CA 953701114722592
  19. Carolyn Oducado, PALa Puente, CA 917441194934380
  20. Mark Oechsli, PACSimi Valley, CA 930631497748149
  21. Sabrina Oei, PA-CStanford, CA 943051851886873
  22. Oriesa Oeij, PA-CEncinitas, CA 920241568020428
  23. Kimberly Oelschlager, PA-CSan Diego, CA 921351598109019
  24. Troy OesterleSacramento, CA 958331740746312
  25. Ofelia OffendelSan Diego, CA 921341952864944
  26. Joy Ofo, PAMontclair, CA 917631396960357
  27. Kaden Ofree, PA-CSanta Cruz, CA 950601235703273
  28. Monique Ofwono, PAEscondido, CA 920291417987223
  29. Rachel Ogata, PA-CPalo Alto, CA 943041205614120
  30. Clement Ogbuehi, PA-CInglewood, CA 903021811211089
  31. Alyssa Ogden, PA-CLaguna Niguel, CA 926771942811617
  32. Beth Ogelvie, PAPalo Alto, CA 943011508955840
  33. Audrey Ogg, PA-CSan Francisco, CA 941071245757194
  34. Rena Ogino, PA-C, MMS, MPHMontebello, CA 906401790410348
  35. Folusho Ogunfiditimi, PA-CMonterey, CA 939401730389198
  36. Francis Ogunleye, PALos Angeles, CA 900591184394793
  37. Catlyn Oh, PA-SRiverside, CA 925031588398119
  38. Eunji Oh, PA-CGardena, CA 902471154019610
  39. Grace OhIrvine, CA 926181790560910
  40. Jessie Oh, PAAlhambra, CA 918011740681717
  41. Tatum Ohana, PA-CNewport Beach, CA 926601932867447
  42. Maureen Ohara, PACDowney, CA 902421215019575
  43. David OhnokiTorrance, CA 905051518612167
  44. Natasha OhtaOrange, CA 928661720415391
  45. Courtney Ojeda, PA-CSunnyvale, CA 940871164267688
  46. Janel Ojeda, PA-CLodi, CA 952421922510171
  47. Michael Ojeda, PHYSICIAN ASSISTANTLos Angeles, CA 900591497614382
  48. Elise Okamoto, PA-CHarbor City, CA 907101477824027
  49. Alysza Kristine Okazaki, PA-CLos Angeles, CA 900331053990051
  50. Theresa Okeke, PA-CFontana, CA 923361114559176

Source: CMS NPPES, primary taxonomy 363A00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 41 of 51 per resident

  1. Georgia42
  2. New Mexico40
  3. Illinois39
  4. California37
  5. New Jersey37
  6. Texas36
  7. 50 states and D.C.49

Source: CMS NPPES, primary taxonomy 363A00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

75.2% of these records appear in a Medicare file, against 77.9% 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. California75.2%
  2. United States77.9%

Physician Assistant records in California, measured

  • In a Medicare file10,860 of 14,451 · 75.2% here, 77.9% nationally
  • In the CMS Doctors and Clinicians file7,218 · 49.9% here, 62.6% nationally
  • Not updated in five years or more5,775 · 40.0% here, 39.3% nationally
  • Median graduation year2018 · the 7,214 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363A00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

14,451 NPPES records list physician assistant (363A00000X) as their primary taxonomy with a practice address in California: 37 per 100,000 residents against 49 nationally (50 states and D.C.). Los Angeles has 935 of them (6%).

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 York15,555
  2. Texas10,999
  3. Florida10,257
  4. North Carolina9,279

States with a similar rate per 100,000

  1. New Jersey36.5
  2. Indiana35.3
  3. Illinois39.3
  4. New Mexico40.1

The largest states

  1. New York15,555
  2. Texas10,999
  3. Florida10,257
  4. North Carolina9,279
  5. Pennsylvania8,020

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.