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 66 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. Timothy Corbin, MDSan Diego, CA 921031093881443
  2. Kerry Corboy, MDCovina, CA 917241134304348
  3. Richard Corcoran, M.D.Corona, CA 928831134376627
  4. Kristina Cordasco, M.D., M.P.H.Los Angeles, CA 900241790700854
  5. Stephen Corday, M.D.Los Angeles, CA 900481194759803
  6. Nolan Cordell, M.D.Long Beach, CA 908221588758387
  7. James Cordero, MDWest Hollywood, CA 900481881383651
  8. Friedhelm Cordes, M.D.Fullerton, CA 928351588650931
  9. Lester Cordes, MDSan Jose, CA 951281962466227
  10. Fred Corey, M.D.San Diego, CA 921201912989674
  11. Susan Corey, MDLos Angeles, CA 900271124324488
  12. Harry Cornbleet, M.D.San Jose, CA 951921639203755
  13. James Corona, MDOrland, CA 959631386646404
  14. Marleen Coronel, M.D.Fresno, CA 937201417100322
  15. Andrew Corr, MDRiverside, CA 925061619958089
  16. Anita Corradetti, M.D.Greenbrae, CA 949041952695207
  17. Aditi Correa, M.D.Huntington Beach, CA 926481801206065
  18. Raoul Correa, MDLoma Linda, CA 923501386219269
  19. Carl Corrigan, MDAntioch, CA 945091285712349
  20. Victor Corsiglia, M.D.San Jose, CA 951161902997810
  21. Casey Corsino, D.O.Hemet, CA 925431952755803
  22. Virgencita Cortes, MDCovina, CA 917221780788497
  23. Ignacio Cortina PetrasicSacramento, CA 958171043870942
  24. Dawn Cortland, MDSan Francisco, CA 941151336299155
  25. Matthew Corvo, MDSaint Helena, CA 945741265811475
  26. William Cory, MDSan Diego, CA 921201841359445
  27. Sarah Coskun, M.D.San Diego, CA 921231104878545
  28. Lawrence Cosner, MDRidgecrest, CA 935551851393813
  29. Lety Costa, MDDos Palos, CA 936201821188269
  30. Samuel Costantini, MDAnaheim, CA 928071851468771
  31. William Costello, MDSanta Rosa, CA 954031770667842
  32. Cynthia Cotharn, M.D.Marina Del Rey, CA 902921669049805
  33. Brooke Cotter, MDStanford, CA 943051093996407
  34. Adrian Cotton, M.D.Loma Linda, CA 923541639196850
  35. D Cotton, MDWhittier, CA 906021053328757
  36. Sandra Coufal, M.D.San Diego, CA 921211629285408
  37. Cathleen Coulman, M.D.Vallejo, CA 945901689941171
  38. Christopher Coulter, MDNewport Beach, CA 926601093913386
  39. Diana Coupard, M.D.San Francisco, CA 941151275938003
  40. Alexandra CoursPalo Alto, CA 943041962990994
  41. Jason Couture, M.D.Riverside, CA 925061962609115
  42. Gracia Covarrubias, MDSan Juan Capistrano, CA 926751730119751
  43. Kenneth Covinsky, M.D.San Francisco, CA 941221386742641
  44. Bruce Covner, M.D.La Jolla, CA 920371720072192
  45. Benjamin Cox, M.D.San Francisco, CA 941021588939771
  46. Daniel Cox, M.D.San Francisco, CA 941431356632665
  47. Duane Cox, MDCompton, CA 902201811075062
  48. Tamika CoySacramento, CA 958171699138982
  49. Katherine Crabtree, MD MPHSan Francisco, CA 941071801146352
  50. Joseph Craft, M.D.Los Angeles, CA 900271194967190

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.