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 39 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. David Carter, P.A-CSan Jose, CA 951161396774600
  2. James Carter, PARohnert Park, CA 949281295888931
  3. Joseph Carter, PA-CLompoc, CA 934361740776020
  4. Katie Carter, PA-CFresno, CA 937201811875172
  5. Lisa Carter, PA-CBurlingame, CA 940101013361112
  6. Megan Carter, PALoma Linda, CA 923541114445053
  7. Michelle Carter, PA-CConcord, CA 945201427890656
  8. Patricia Carter, PA-CEureka, CA 955011174001986
  9. Richard CarterPalm Springs, CA 922621104713494
  10. Sabrina CarterVallejo, CA 945921952173429
  11. Alexis CartwrightVallejo, CA 945921811861172
  12. Pamela Cartwright, PA-CSan Diego, CA 921341336574128
  13. Amanda CarusoDublin, CA 945681770058935
  14. Elana CarvalhoHemet, CA 925431376994764
  15. Kelli Carver, PA-CFolsom, CA 956301245558923
  16. Hannah CarvuttoSherman Oaks, CA 914031275277063
  17. Brian Cary, PASanta Monica, CA 904041376733790
  18. John Cary, PA-CArcadia, CA 910071821685942
  19. Michelle CasaleAlhambra, CA 918031659005601
  20. Blanca Casas, PAWildomar, CA 925951649328568
  21. Daniela Casas, PA-CColton, CA 923241124430145
  22. Joseph CasasApple Valley, CA 923071972919876
  23. Genesis CascoPomona, CA 917661295429215
  24. Nicholas Cascone, PA-CValley Village, CA 916071427234400
  25. Vincent Caserio, PA-CCalabasas, CA 913021417440603
  26. Brooke Casey, PHYSICIAN ASSISTANTLivingston, CA 953341083351480
  27. Caitlin Casey, PA-CWatsonville, CA 950761720436470
  28. Sheri Casey, PA-CSan Francisco, CA 941111598274987
  29. Zachary Cash, P.A.Loma Linda, CA 923541275717316
  30. Bernard Casillan, PASan Diego, CA 921081972619450
  31. Ernesto CasillasTorrance, CA 905011174470744
  32. Sandra CasillasBakersfield, CA 933091164190153
  33. Stephen Caso, PA-CTemecula, CA 925901083916985
  34. Kaelyn Caspillo, PA-CNapa, CA 945581023672763
  35. Caris CassadyFortuna, CA 955401790299048
  36. Katelyn Cassibba, PA-CSeaside, CA 939551790460715
  37. Francesca CastanBeverly Hills, CA 902111114684693
  38. Jenai Castaneda, PA-CVictorville, CA 923951336747567
  39. Jocelyn Castaneda, PALoma Linda, CA 923541023896313
  40. Myriam Castaneda, PALivingston, CA 953341710217799
  41. Ruben Castaneda, PA-CDuarte, CA 910101285837633
  42. Viviana Castaneda, PA-CSacramento, CA 958171073407243
  43. Marina Castanedo Leonard, PHYSICIAN ASSISTANTSanta Maria, CA 934541235623497
  44. Grace Castanon, PA-CBeverly Hills, CA 902111508358805
  45. Ashley Castelhano, PA-CVista, CA 920811760723050
  46. Christian CastellanosOxnard, CA 930301346027828
  47. Cristina Castellanos JimenezLos Angeles, CA 900591962170092
  48. Chiara Castelli, PA-CMonterey, CA 939401538546981
  49. Jordan Castello, PA-COceanside, CA 920561356196653
  50. Maria Castellon, P.A.-CSherman Oaks, CA 914031306003272

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.