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 284 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. Liane Wu, PA-CWatsonville, CA 950761982260774
  2. Megan Wu, PA-CPalo Alto, CA 943041427436492
  3. Olivia Wu, PA-CCarmichael, CA 956081932549649
  4. Tiffany WuSan Francisco, CA 941081972143519
  5. Tina Wu, PA-CStanford, CA 943051649058199
  6. Vanna Wu, PA-COrange, CA 928681285319905
  7. Victor Wu, PA-CStanford, CA 943051770098774
  8. Yi-Ting Wu, PA-CLos Angeles, CA 900331659016152
  9. Roxann WuestPomona, CA 917661316168578
  10. Jennifer Wurz, PA-CSan Leandro, CA 945781518291640
  11. Jessica Wusterbarth, PA-CHermosa Beach, CA 902541487742607
  12. Marissa Wyan, PA-CMerced, CA 953411528988714
  13. Lisa WymerBurlingame, CA 940101104533298
  14. Elizabeth Wyndham, PA-CSan Francisco, CA 941111548368897
  15. Marc Wysong, PAOroville, CA 959661194837278
  16. Dale Wyville, P.A.Rancho Mirage, CA 922701528075934
  17. Jacqueline Xavier, MMS PACDowney, CA 902421366525768
  18. Susu Xi, PA-CStanford, CA 943051780202002
  19. Janice XiaoTustin, CA 927821942150271
  20. Tou Xiong, PA-COroville, CA 959651093194920
  21. Yanna Xiong, PAMonterey Park, CA 917541730896788
  22. Yee Xiong, PA-CDos Palos, CA 936201619247574
  23. Bo Xu, P.A.-CSan Mateo, CA 944031497903082
  24. Christopher Xu, PA-CRedding, CA 960011417757097
  25. Da Xu, PA-CCitrus Heights, CA 956101366755381
  26. Jennie Xu, PA-CSan Diego, CA 921111356162440
  27. Jiayu Xuan, PAFresno, CA 937201740039627
  28. Nichole YadidiWest Hills, CA 913071003565789
  29. Andrew Yaghnam, PA-CSimi Valley, CA 930651801740576
  30. Mahsa Yaghoubi, PA-COakland, CA 946091326517251
  31. Doris Yaghoubtil, PHYSICIAN ASSISTANTBeverly Hills, CA 902111649817610
  32. Aishwarya Yagnik, PA-CMoreno Valley, CA 925551891058640
  33. Chung Yam, PAOroville, CA 959661295856250
  34. Norman Yamada, PASan Ramon, CA 945831295702553
  35. Raeanne Yamada, PA-CModesto, CA 953551942784517
  36. Ruth Yamada, PA-CLos Angeles, CA 900131801078498
  37. Laura Yamagata, PA-CStanford, CA 943051689245201
  38. Eugene YamamotoNewport Beach, CA 926631649714627
  39. Nancy Yamasaki, P.A.Los Angeles, CA 900151639125412
  40. Elliot YaminAlhambra, CA 918031083347330
  41. Alvin YanNewport Beach, CA 926631245859560
  42. Courtley Yan, PA-CGlendora, CA 917401205435583
  43. Michelle Yan, PA-CMonterey Park, CA 917541033066618
  44. Quanjian Yan, PABeaumont, CA 922231144796335
  45. Rebecca YanagaTarzana, CA 913561073107041
  46. Alexus Yang, PA-CCitrus Heights, CA 956101629546346
  47. Alfred Yang, PAOakland, CA 946111548416647
  48. Annie Yang, PA-CLos Angeles, CA 900331831771104
  49. Danna YangPleasant Hill, CA 945231558963892
  50. Danni Yang, PALos Angeles, CA 900481285277665

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.