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 191 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. Julie Ma, MDPacific Palisades, CA 902721306865688
  2. Michael Ma, MDSan Gabriel, CA 917761891945804
  3. Mina Ma, MDLos Angeles, CA 900951215956594
  4. Peter Ma, M.D.Arcadia, CA 910071902831019
  5. Ruhong Ma, D.O.San Diego, CA 921201063679587
  6. Stephen Ma, MDStanford, CA 943051508329442
  7. Tamara Ma, M.D.Los Angeles, CA 900331487926929
  8. Than MaLos Angeles, CA 900421629234745
  9. Than Ma, M.D.Carmichael, CA 956081457589129
  10. Kurene Ma'o, M.D.Carson, CA 907451922103860
  11. Carine Maalouf, M.D.Glendale, CA 912061851622930
  12. Jasdave Maan, MDMendota, CA 936401942829791
  13. Zainab Mabizari, MDStanford, CA 943051114554540
  14. Vickie Mabry-Height, MD,MPHPalm Desert, CA 922601023287364
  15. Sharina Macapagal, MDWest Sacramento, CA 956911508551391
  16. Lauren Macaraeg, M.D.Daly City, CA 940151730612532
  17. Marie Macarubbo, MDModesto, CA 953551134175540
  18. Alexander Macbriar, MDStanford, CA 943051073931895
  19. Ronda Macchello, MDLos Altos, CA 950221114019742
  20. Mitchell Maccready, MDManteca, CA 953371821593104
  21. Thomas Macdermaid, M.D.Palm Springs, CA 922621487867685
  22. Scott Macdonald, MDSacramento, CA 958161518940006
  23. Matthew Macfarlane, MDSan Diego, CA 921031285123067
  24. Beata Mach, MDSanta Cruz, CA 950621184604712
  25. Ricardo Machado CarvalhaisLoma Linda, CA 923501356079131
  26. Patricia Maciog, MDLong Beach, CA 908151063436509
  27. Abigail Mackenzie, MDSan Diego, CA 921031053165639
  28. David Maclachlan, MDSanta Ana, CA 927051114430402
  29. Susan Maclean, MDSanta Clara, CA 950511720165665
  30. John Macmillan, MDSacramento, CA 958171568449015
  31. Max Macmillan, MDLa Mesa, CA 919411295355303
  32. Michael Macmurray, M.D.Vista, CA 920841386660280
  33. Juliana MacriSan Francisco, CA 941211376967406
  34. Robert Macy, MDPlacerville, CA 956671184630147
  35. Sudha Madabhushi, M.D.Hemet, CA 925431902990641
  36. Khorshed Madan, M.D.Redwood City, CA 940631366464356
  37. Badran Madani, MDColton, CA 923241699870139
  38. Mahsa Madani, MDManhattan Beach, CA 902661245791243
  39. Elizabeth Madarang, M.D.Carmichael, CA 956081396824785
  40. Padmavathi Madathanapalli, MDSan Leandro, CA 945781336253152
  41. Elaine Madayag-Capuno, MDOakdale, CA 953611134232119
  42. Suneetha Maddineni, M.DMountain View, CA 940401962774679
  43. Chakravarthy Maddipati, M.D.Oroville, CA 959661538157151
  44. Janusz Madej, M.D.Los Altos, CA 940221376616706
  45. Jessica Madej, MDLos Altos, CA 940221417537218
  46. Niraj Madhani, MDSan Diego, CA 921031891254868
  47. Anuradha Madhavan, MDStanford, CA 943051679034201
  48. Suneetha Madhu, M.D.Emeryville, CA 946081861915118
  49. John Madigan, MDSacramento, CA 958161164527461
  50. Divya Bhanu Sree Madisetty, M.DSan Bernardino, CA 924041093389124

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.