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 64 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. Edward Cohen, MDOakland, CA 946111013096718
  2. Fred Cohen, M.D.San Francisco, CA 941041750445581
  3. Gerald Cohen, MDLos Alamitos, CA 907201306877253
  4. Harry Cohen, M.D.Malibu, CA 902651851405179
  5. Jeffrey CohenSan Diego, CA 921231184184251
  6. Jenny Cohen, M.D., M.P.H.Oakland, CA 946021811330616
  7. Justin Cohen, DOLos Angeles, CA 900571043847023
  8. Lauren Cohen, MDSan Francisco, CA 941431922700483
  9. Lenore Cohen, MDPalo Alto, CA 943011790891299
  10. Philip Cohen, MDEncino, CA 914361154422418
  11. Sagi Cohen, M.D.Calabasas, CA 913021679872311
  12. Bruce Cohn, M.D.Carmichael, CA 956081053332536
  13. Lawrence Cohn, MDParamount, CA 907231437262250
  14. Jason Coker, D.O.Los Angeles, CA 900271184889230
  15. Anne Cole, M.D.Sunnyvale, CA 940871922188945
  16. Jonathan Cole, M.D.Beverly Hills, CA 902101700925997
  17. Phillip Cole, M.D.Sacramento, CA 958251386793214
  18. Sophie Cole, MDBurlingame, CA 940101124190970
  19. Mark Coleman, M.D.Palm Springs, CA 922621952333866
  20. Shane Coles, MDSan Diego, CA 921031275093593
  21. Grant Colfax, MDSan Francisco, CA 941101871610246
  22. Corey Colla, MDLodi, CA 952401619934809
  23. Kenneth Collado, MDLoma Linda, CA 923541265127310
  24. Robert Collen, M.D.Cerritos, CA 907031538267125
  25. Kenneth Colley, MDSan Francisco, CA 941151225270713
  26. Frank Collie, MDSan Luis Obispo, CA 934051861496879
  27. Brian Collins, M.D.Los Angeles, CA 900331063647576
  28. Catherine Collins, M.D.San Francisco, CA 941181346265790
  29. David Collins, D.O.Fresno, CA 937011801060926
  30. Duane Collins, MDFontana, CA 923351932276847
  31. Laura Collins, MDMill Valley, CA 949411619976339
  32. Lindsay Collins, DOLoma Linda, CA 923541174148886
  33. Robert Collins, M.D.Encino, CA 913161669671350
  34. Ronald Collins, M.D.Downey, CA 902421235176181
  35. Timothy Collins, DORiverside, CA 925011366905473
  36. William Collins, M.D.Stanford, CA 943051659689032
  37. Jenny-Viva Collisson, MDSan Francisco, CA 941141841223567
  38. Edwin Colloff, MDPalo Alto, CA 943051851498489
  39. Drew Colman, MDBeverly Hills, CA 902111952987893
  40. Kevin Colton, MDTempleton, CA 934651770542268
  41. Meryl Colton, MD, MSSan Francisco, CA 941431326500091
  42. Stephen Colucci, MDRiverside, CA 925061245211614
  43. Kevin Colwell, M.D.Simi Valley, CA 930631538195672
  44. Daniel Combitsis, DOLivermore, CA 945511942346549
  45. Robert Comer, MDLong Beach, CA 908071134233158
  46. David Comings, M.D.Monrovia, CA 910161801519012
  47. Silvia Compean, MDPanorama City, CA 914021013065804
  48. David Conant, MDNovato, CA 949451568546539
  49. Ian Concepcion, M.D.Vallejo, CA 945891245569367
  50. Reena Concepcion, MDOakland, CA 946111386878122

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.