NPPES file of Aug 9, 2026

Medical Physician Assistant in California

3,376 NPPES records list medical physician assistant with a practice address in California, 9 per 100,000 residents, the 36th 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 45 of 68.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363AM0700X · 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, 225

  1. Los Angeles225
  2. San Diego169
  3. Sacramento105
  4. Fresno81
  5. San Francisco74

Medical Physician Assistant records in California

  1. Judy Ngo, PA-CFresno, CA 937211871277459
  2. Angela Nguyen, PA-C, MPHBakersfield, CA 933111689012452
  3. Christina Nguyen, PA - CCosta Mesa, CA 926271063894988
  4. Claire Nguyen, PA-C, L.AC.Sacramento, CA 958111225224744
  5. Daniel Nguyen, PA-CFountain Valley, CA 927081962047365
  6. Diana Nguyen, PA-CSan Jose, CA 951271861834400
  7. Diane NguyenSacramento, CA 958171215737762
  8. Dung Nguyen, PA-CLong Beach, CA 908041598978082
  9. Evelyn Nguyen, PA-CIrvine, CA 926121063783413
  10. Hieu NguyenSan Bernardino, CA 924111346619731
  11. Hieu Nguyen, PA-CSan Jose, CA 951211568168995
  12. Hoan Nguyen, PA-CRedwood City, CA 940621588378699
  13. Jennifer Nguyen, PA-CSan Diego, CA 921141891080750
  14. Jenny NguyenAnaheim, CA 928041023565785
  15. Jimmy Nguyen, PAPasadena, CA 911051366394835
  16. Kaitlyn Nguyen, P.A.C.Fountain Valley, CA 927081043590250
  17. Kristina Nguyen, PA-CWest Covina, CA 917901831802552
  18. Kristine Nguyen, PA-CIrvine, CA 926021902461189
  19. Lily Nguyen, PA-C, L.AC.Santa Monica, CA 904041902085962
  20. Ngoclien Nguyen, P.A.San Jose, CA 951211952793689
  21. Son Nguyen, PA-CLos Angeles, CA 900891194025866
  22. Terry Nguyen, P.A.Los Angeles, CA 900151225381189
  23. Thanh Trung Nguyen, PA-C, MSPAS, MPH, MSBerkeley, CA 947031831501345
  24. Tran Nguyen, PA-CNewark, CA 945601871849950
  25. Tridang Nguyen, PA-CVentura, CA 930031497531131
  26. Triet Nguyen, PA-CSanta Ana, CA 927041619167558
  27. Tuong-Vy NguyenSanta Ana, CA 927051518564665
  28. Van Nguyen, PACGarden Grove, CA 928431821164880
  29. Van Nguyen, PA-CSacramento, CA 958161700838315
  30. Vivian Nguyen, P.A.Ventura, CA 930041457787467
  31. Wendy Nguyen, PA-CDowney, CA 902421508249962
  32. Mervyn Nicholas, PAVallejo, CA 945911104854728
  33. Tiffany Nickens, PA-CRedway, CA 955601386136778
  34. Amoret Nicklisch, PA-CDavis, CA 956161699972158
  35. Elena Nicola, PA-CSun City, CA 925861740388370
  36. John Nicolaisen, PAApple Valley, CA 923071548666738
  37. Aryon Nielsen, PA-CPlacerville, CA 956671477369510
  38. Nancy Nielsen-Brown, PA-CPomona, CA 917661003101882
  39. Cynthia Nielson, PAMarysville, CA 959011578588349
  40. Jason Nies, PASacramento, CA 958161588121354
  41. Daniella NiliPomona, CA 917661417784653
  42. Elena Nimon, PA-CSan Mateo, CA 944011104091412
  43. Abigail Nimtz, PASan Francisco, CA 941181427666239
  44. Alexis Nixon, PAHollywood, CA 900281699713966
  45. Judy Nogales-Chapman, PA-CCastro Valley, CA 945461720075914
  46. Joseph NojanMission Viejo, CA 926911083380885
  47. Margaret Nonato, PA-CVallejo, CA 945901013961572
  48. Gennady Nosovitsky, PA-CCathedral City, CA 922341780007708
  49. James Noud, P.A.Ventura, CA 930031164454807
  50. Michael Novak, PAWeaverville, CA 960931043345994

Source: CMS NPPES, primary taxonomy 363AM0700X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 36 of 51 per resident

  1. Nevada10
  2. Kansas9
  3. South Carolina9
  4. California9
  5. Tennessee9
  6. New Jersey9
  7. 50 states and D.C.12

Source: CMS NPPES, primary taxonomy 363AM0700X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

69.1% of these records appear in a Medicare file, against 74.0% 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. California69.1%
  2. United States74.0%

Medical Physician Assistant records in California, measured

  • In a Medicare file2,332 of 3,376 · 69.1% here, 74.0% nationally
  • In the CMS Doctors and Clinicians file1,348 · 39.9% here, 54.5% nationally
  • Not updated in five years or more1,823 · 54.0% here, 54.7% nationally
  • Median graduation year2012 · the 1,347 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363AM0700X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

3,376 NPPES records list medical physician assistant (363AM0700X) as their primary taxonomy with a practice address in California: 9 per 100,000 residents against 12 nationally (50 states and D.C.). Los Angeles has 225 of them (7%).

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 York3,670
  2. Pennsylvania3,897
  3. Florida2,776
  4. Texas2,146

States with a similar rate per 100,000

  1. Tennessee8.6
  2. New Jersey8.5
  3. South Carolina9.2
  4. Minnesota8.0

The largest states

  1. Pennsylvania3,897
  2. New York3,670
  3. Florida2,776
  4. Texas2,146
  5. North Carolina1,352

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.