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 96 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. Juan Carlos Franco, M.D.Escondido, CA 920251437357852
  2. Lisandra Franco, MDSacramento, CA 958201619358199
  3. Gerald Frank, MDHayward, CA 945451124106976
  4. Jonathan Frank, M.D.Walnut Creek, CA 945951215003090
  5. Matthew Frankel, M.D., M.B.AOakland, CA 946111568542405
  6. Richard Frankenstein, M.D.Riverside, CA 925061295885325
  7. James Frankfort, MDGilroy, CA 950201497975189
  8. Sally Frankl, M.D.Tarzana, CA 913561710076054
  9. Bruce Franklin, MDPleasanton, CA 945881912085077
  10. Trivianne Franklin, DOOakland, CA 946111710636089
  11. Laura Frassinelli, MDSan Diego, CA 921821174708671
  12. Patrick Frawley, MDSanta Barbara, CA 931051093707358
  13. Susan Frayne, MD, MPHPalo Alto, CA 943041952314890
  14. Melissa Frederick, M.D.Millbrae, CA 940301033238076
  15. William Frederick, MD, PHDStanford, CA 943051841592805
  16. Mark Fredrick, MDHuntington Beach, CA 926461518964998
  17. Spencer FreedWeimar, CA 957361740921253
  18. Sheira Freedman, MDOakland, CA 946021700896396
  19. Breanna Freeman-Jordan, M.D.Inglewood, CA 903011164739389
  20. Michelle Freemer, MDSan Francisco, CA 941101013931211
  21. Jeffery Freesemann, MDBakersfield, CA 933011336156488
  22. Moshe Freiberg, M.D.Glendale, CA 912041639115611
  23. Marvin Freid, M.D.Larkspur, CA 949391639602923
  24. William Frem, DOLos Angeles, CA 900331831820646
  25. David French, M.D.Palm Springs, CA 922621104143452
  26. Meghana Frenchman, MDNorth Hills, CA 913431053477638
  27. Linda Fresco, MDMenlo Park, CA 940251811092901
  28. Marlane Fretz, MDAntioch, CA 945091700936523
  29. Jonathan Freudman, MDSan Rafael, CA 949011851331094
  30. Michael Freund, M.D.Lakewood, CA 907121447244157
  31. Sylvia Friedberg, M.D.Portola Valley, CA 940281396886925
  32. Jenny Friedland, MDLos Angeles, CA 900951336785286
  33. Michael Friedlander, M.D.Los Banos, CA 936351376550913
  34. Lauren Friedly, M.D.Burlingame, CA 940101881615664
  35. Bradley Friedman, M.D.Los Angeles, CA 900641831383082
  36. Charles Friedman, M.D.Los Angeles, CA 900491902111933
  37. Jodi Friedman, MDLos Angeles, CA 900951265457444
  38. Jon Friedman, MDManhattan Beach, CA 902661083116883
  39. Steven Friend, MDRancho Cordova, CA 957421932289774
  40. Reginald Friesen, M.D.Alta Loma, CA 917371043642333
  41. Donna Frisch, MDAnaheim Hills, CA 928071093728503
  42. Alan Frischer, M.D.Downey, CA 902411982701454
  43. Christina Fritsch, MDSanta Rosa, CA 954031699854737
  44. Anthony Fritz, M.D.San Francisco, CA 941051194750901
  45. Emily Fritzmann, MDTorrance, CA 905021679060107
  46. Geir Frivold, M.D.Loma Linda, CA 923571861405623
  47. Paul Frohna, MD, PHDSan Francisco, CA 941141780729699
  48. Stefan Frolov, MDLaguna Hills, CA 926531982769733
  49. Navid Froutan, MDLa Jolla, CA 920371740741917
  50. Amanda Frugoli, D.OVentura, CA 930031972918217

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.