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 64 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. Angela Diaz, PACBaldwin Park, CA 917061053413898
  2. Angelique Diaz, PASacramento, CA 958161194438622
  3. Debra Diaz, PA-CStanford, CA 943051417362096
  4. Jordan Diaz, PA-CCulver City, CA 902301013743244
  5. Joselyn Diaz, PA-CLos Angeles, CA 900371508498148
  6. Joseph Diaz, PA-CVentura, CA 930041023114709
  7. Juan DiazRiverside, CA 925041770269912
  8. Leticia DiazTurlock, CA 953801346882800
  9. Mark Diaz, PA-C, MS, MPHDavis, CA 956161164942116
  10. Monica Maria Diaz, PA-COakland, CA 946091790488302
  11. Robert DiazChula Vista, CA 919111154586535
  12. Taylor Diaz, PA-CTorrance, CA 905031083264923
  13. Vilma DiazBurbank, CA 915041114610540
  14. Leslie Diaz-Orozco, MPAS, PA-CSanta Cruz, CA 950601457159444
  15. Richard Dibella, PASan Francisco, CA 941181134169410
  16. Demijon DicenBeverly Hills, CA 902111528726429
  17. Camille DickersonMountain View, CA 940401447887880
  18. Allison Dickinson, PA-CSan Diego, CA 921231972655389
  19. Cynthia Dickinson, RNSanta Rosa, CA 954031689966152
  20. Kyle Dickinson, PA-CLompoc, CA 934361689140535
  21. Carolina Dickson, PA-CMarina Del Rey, CA 902921790134138
  22. Kaitlin Dickson, PASan Diego, CA 921231710525936
  23. Anna Dieck, PA-CPalo Alto, CA 943011386408631
  24. Alejandra Diedrich, P.A.San Diego, CA 921011487767539
  25. Amanda Diep, PA-CSan Jose, CA 951241962065805
  26. Vivian DiepSan Jose, CA 951481487167912
  27. Marque Dietzler, P.A.Loma Linda, CA 923541073968459
  28. William Diez, PA-CRedlands, CA 923731780054858
  29. Carolyn Difrancesco, PA-CStanford, CA 943051194770651
  30. Michael DifronzoColton, CA 923241881095107
  31. Christian DigapCarmichael, CA 956081245184894
  32. Michaelen Diiorio, P.A.Hawthorne, CA 902501144499534
  33. Nwanneka DikeSacramento, CA 958281114574951
  34. Margaret Diliberto, P.A.-C.Encinitas, CA 920241205922887
  35. Steven Dillavou, P.A.-C.Torrance, CA 905031003171851
  36. Matthew Dillon, P.A.Redwood City, CA 940621952349284
  37. Caroline Dimatteo, PA-CSanta Ana, CA 927031174058978
  38. Karlee DimatteoSignal Hill, CA 907551861100521
  39. Amanda DimechSan Jose, CA 951281194437970
  40. Kaylee Dimeo, PA-CSan Jose, CA 951281912676180
  41. Alys DimercurioVallejo, CA 945921215640255
  42. Lea Dimmling, PAPalo Alto, CA 943041699360057
  43. Lisa Dimodica, PASan Luis Obispo, CA 934051669617015
  44. Alexandra DimoskiMonterey, CA 939401649031550
  45. Courtney DimpelSanta Cruz, CA 950651801461983
  46. Elise Diner, P.A.-CEl Segundo, CA 902451902237894
  47. Xin Ding, PA-CSan Francisco, CA 941581134881253
  48. Anne DinhAntioch, CA 945091730777210
  49. Dung Dinh, P.A.San Jose, CA 951211740794437
  50. Duy Dinh, PA-CLos Angeles, CA 900481003230798

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.