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 153 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. Dzuy Luu, PA-CLa Puente, CA 917441912284795
  2. Emily LuuPalm Springs, CA 922641790349652
  3. Helen Luu, PA-CSan Francisco, CA 941111871005850
  4. Henry LuuTustin, CA 927801033879739
  5. Jackie LuuLa Jolla, CA 920371689103749
  6. Jelina LuuPlacentia, CA 928701801565155
  7. Kathleen Luu, PA-CLos Angeles, CA 900191457123812
  8. Stephanie LuuSanta Ana, CA 927041841076189
  9. Antonio Luza, PA-CSacramento, CA 958211891773834
  10. Stephanie Luzak, PA-CSan Diego, CA 921081205130481
  11. Amy Ly, PAGlendora, CA 917411356978126
  12. An Ly, PA-CLos Angeles, CA 900331780361493
  13. Anh Ly, PHYSICIAN ASSISTANTMonrovia, CA 910161386136398
  14. Carman Ly, PA-COxnard, CA 930301750272191
  15. Cindy Ly, PA-SVallejo, CA 945921619794963
  16. Courtnie Ly, PAEncinitas, CA 920241538874995
  17. Darlene Ly, PAArcadia, CA 910061114513520
  18. Jennifer LyLos Angeles, CA 900331316783202
  19. Julie Ly, PA-CFullerton, CA 928331497909113
  20. Karrie Ly, PA-CStockton, CA 952041598383382
  21. Kathy LyCarson, CA 907451043080740
  22. Kelly Ly, PA-CWest Covina, CA 917901912742552
  23. Kim Ly, PA-CFountain Valley, CA 927081043017569
  24. Michelle Ly, PALa Jolla, CA 920931760115521
  25. Ngoc Ly, PA-CLong Beach, CA 908081093591513
  26. Queenie LyVallejo, CA 945921295608982
  27. Shannon LyFullerton, CA 928351235848268
  28. Thuc Ly, PA-CWest Covina, CA 917921407968712
  29. Tiffany LySan Diego, CA 921051225884554
  30. Linda Ly Zaragoza, PA-COrange, CA 928681821534934
  31. Jocelyn Lybarger, PA-CTruckee, CA 961611750793618
  32. Elizabeth Lykins, PA-CWatsonville, CA 950761386683845
  33. Madeline Lyman, PA-CSacramento, CA 958111174213193
  34. Carolyn Lyn, PA-CHuntington Beach, CA 926481093872988
  35. Hayley Lynam, PA-CCorona, CA 928821003357344
  36. Elizabeth Lynch, PA-CSan Francisco, CA 941141073779609
  37. Gregory Lynch, PA-CCorona, CA 928821790008175
  38. James Lynch, PAChula Vista, CA 919141235747866
  39. Kathryn Lynch, PA-COxnard, CA 930301194011973
  40. Kristina Lynch, PA-CLynwood, CA 902621518390541
  41. Martha Lynch, PA-COakland, CA 946081093727133
  42. Sean Lynch, PA-CLa Mesa, CA 919421366672040
  43. Carolyn Lyon, PARidgecrest, CA 935551740779073
  44. Eric Lyon, PA-CWest Hills, CA 913071992154934
  45. Ian LyonOakland, CA 946091235991019
  46. Shannon Lyon, RPAPalo Alto, CA 943011700895141
  47. Stephen Lyon, P.A.San Diego, CA 921201477007573
  48. William Lyon, PASan Diego, CA 921201144346305
  49. Jennifer Lyons, PA-CChino Hills, CA 917091730215401
  50. Jennifer Lyons, P.A.Santa Cruz, CA 950621770533887

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.