NPPES file of Aug 9, 2026

Internal Medicine Physician in California

17,696 NPPES records list internal medicine physician with a practice address in California, 45 per 100,000 residents, the 17th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 13 of 354.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · 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, 1,423

  1. Los Angeles1,423
  2. San Francisco1,318
  3. San Diego961
  4. Sacramento601
  5. Oakland432

Internal Medicine Physician records in California

  1. Apoorva Ananth, MDRiverside, CA 925061558866863
  2. Marilyn Ancel, MDOakland, CA 946071295813087
  3. Nora Ancheta, MDSan Jose, CA 951221588733166
  4. Galicano Andal, M.D.Pittsburg, CA 945651437263571
  5. Naissem Andemel, MD, MPHAntioch, CA 945311295294676
  6. William Andereck, M.D.San Francisco, CA 941151699800219
  7. Floyd Andersen, MDFontana, CA 923351760530752
  8. Gilbert Andersen, M.D.Lompoc, CA 934361821091836
  9. Stuart Andersen, M.D.San Diego, CA 921031205270956
  10. David Anderson, MDHayward, CA 945451659459410
  11. David Anderson, MDHealdsburg, CA 954481629005483
  12. David AndersonSacramento, CA 958171750648374
  13. Kendell Anderson, D.O.San Diego, CA 921031285028191
  14. Richard Anderson, M.D.Burbank, CA 915051861522070
  15. Robert Anderson, MDMartinez, CA 945531447338538
  16. Robert Anderson, M.D.Vallejo, CA 945891265454623
  17. Scott Anderson, MDNapa, CA 945581619929494
  18. Susan Anderson, MDPalo Alto, CA 943011104985621
  19. Eleanor Anderson-Williams, M.D.Union City, CA 945871164576815
  20. Bruce Andich, MDWillits, CA 954901982682381
  21. David Andino-Nieves, MDSan Francisco, CA 941171639515638
  22. Steven Ando, M.D.Burbank, CA 915051205937703
  23. Yumi Ando, M.D.Menlo Park, CA 940251376658146
  24. Anita Andra, MDRiverside, CA 925051689873341
  25. Maria Andrae-Hammond, M.D.Orinda, CA 945631942579115
  26. Allan Andres, M.D.Travis Afb, CA 945351114176161
  27. Daniel Andrews, M.D.Napa, CA 945581659394427
  28. John Andrews, M.D.Santa Monica, CA 904031447262126
  29. John Andrews, MDLa Jolla, CA 920371003164302
  30. Joseph Andrews, M.D.La Jolla, CA 920371588639876
  31. Keith Andrews, M.D.Sacramento, CA 958231720168016
  32. Michael Andya, M.D.Grass Valley, CA 959451760428452
  33. Muhammad Anees, M.D.Downey, CA 902411730323353
  34. James Anenih, PAGlendale, CA 912021093817918
  35. Cesar Ang, MDPlacerville, CA 956671225010218
  36. David Ang, M.D.Seaside, CA 939551699700344
  37. Dorcas Ang, MDFontana, CA 923351508914417
  38. Grace Ang, M.D.Napa, CA 945581902990245
  39. Kwan-Keat AngSacramento, CA 958171447887666
  40. Romeo Felito Ang, M.D.Blythe, CA 922251023215191
  41. Clay Angel, M.D.Emeryville, CA 946081477522548
  42. Stephen Angel, M.D.Newport Beach, CA 926631760550198
  43. Paden Angelo, MDStanford, CA 943051083888960
  44. Jose Anguiano, M.D.Downey, CA 902401841637576
  45. Ho Anh, M.D.San Francisco, CA 941121134440431
  46. James Anholm, M.D.Loma Linda, CA 923571487678645
  47. Chizobam Onyedinma Ani, M.D.Mission Hills, CA 913451497045017
  48. Samuel AniEl Cajon, CA 920201215514823
  49. Dilip Anmangandla, MD.Agoura Hills, CA 913011942536495
  50. Bala Annadurai, M.D.Fremont, CA 945381033100516

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 17 of 51 per resident

  1. New Jersey50
  2. New Hampshire48
  3. Minnesota46
  4. California45
  5. Florida45
  6. Ohio45
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.5% of these records appear in a Medicare file, against 78.7% 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. California79.5%
  2. United States78.7%

Internal Medicine Physician records in California, measured

  • In a Medicare file14,068 of 17,696 · 79.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file11,077 · 62.6% here, 61.4% nationally
  • Not updated in five years or more10,832 · 61.2% here, 55.4% nationally
  • Median graduation year2004 · the 11,065 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17,696 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in California: 45 per 100,000 residents against 44 nationally (50 states and D.C.). Los Angeles has 1,423 of them (8%).

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 York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300

States with a similar rate per 100,000

  1. Minnesota45.9
  2. Ohio44.8
  3. New Hampshire48.0
  4. Maine42.8

The largest states

  1. New York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300
  5. Illinois7,238

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.