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 206 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. John MessingerSan Francisco, CA 941101588366579
  2. Eric Messner, MDSanta Clara, CA 950511578640413
  3. Lynne Messner, M.D.Rancho Mirage, CA 922701053425280
  4. Tamar Meszaros, M.D.Beverly Hills, CA 902111518150192
  5. Elliott Metcalfe, MDModesto, CA 953501295703692
  6. Jamie Metcalfe, MDSacramento, CA 958171528563624
  7. John Metcalfe, M.D.San Francisco, CA 941101154399350
  8. Erica Metz, MDSan Francisco, CA 941151285712729
  9. Richard Metz, MD FACPLos Angeles, CA 900671821082447
  10. Charles Metzger, MDPetaluma, CA 949541881778959
  11. Amy Metzger McHardy, M.D.San Francisco, CA 941041780986422
  12. Jason Mevi, MDLos Banos, CA 936351295800258
  13. Blake Meyer, MDLos Angeles, CA 900481932845625
  14. Gloria Meyer, MDSanta Rosa, CA 954031265516231
  15. Grant Meyer, M.D.San Diego, CA 921231174900823
  16. Nathaniel MeyerLos Angeles, CA 900951770016586
  17. Sharon Meyer, M.D.San Francisco, CA 941181972691988
  18. Suzanne Meyer, M.D.Modesto, CA 953501134137680
  19. Brian Meyerhoff, M.D.Escondido, CA 920251467417717
  20. Martha Meza, MDLos Angeles, CA 900411629126545
  21. Zainab Mezban, MDWalnut Creek, CA 945951275621872
  22. Aparna Miano, M.D.Los Angeles, CA 900331669401733
  23. Hui Miao, MDModesto, CA 953501881837524
  24. Susanna Miao, MDStanford, CA 943051366902991
  25. Wesley Miao, M.D.Los Angeles, CA 900331033393582
  26. Guy Micco, M.D.Berkeley, CA 947201881718807
  27. Rami Michael, MDLa Jolla, CA 920371467871673
  28. Onyedikachi Michaels, M.D.Fresno, CA 937211821583584
  29. Alan Michel, M.D.Auburn, CA 956021821047887
  30. Leslie Michel, MDSan Luis Obispo, CA 934011184670820
  31. Donald Micheletti, MDCrescent City, CA 955311275531998
  32. Giulia Michelini, M.D.Sepulveda, CA 913431083716443
  33. Rachel Michels, MDSan Diego, CA 921201427318625
  34. Bernard Michlin, M.D.San Diego, CA 921201861492738
  35. Maria Michnowska, M.D.San Andreas, CA 952491336261106
  36. Yolanda Mickevicius Ruokis, MDSan Bernardino, CA 924071952425316
  37. Jack Middlebrooks, MDFountain Valley, CA 927081497786008
  38. Fabiola Mieses Pun, MDTurlock, CA 953821427544022
  39. Frank Migliarese, MDSan Diego, CA 921341114547098
  40. Mihaela Mihaluta-Pasaboc, MDBakersfield, CA 933011386632834
  41. Kip Mihara, MDSan Francisco, CA 941211013923267
  42. Tatiana MikhaelWoodland Hills, CA 913671902508047
  43. Christine Mikhail, M.D.Norco, CA 928601538521067
  44. Emad Mikhail, MDIrvine, CA 926181376582957
  45. Mina Mikhail, MDRiverside, CA 925061336226786
  46. Eva Mikrut, MDDaly City, CA 940151396873741
  47. Beverly Mikuriya, MDCool, CA 956141508872722
  48. Arash Milani, MDVictorville, CA 923951043581317
  49. Payvand MilaniLos Altos, CA 940221548647126
  50. Sina Milani, MDFountain Valley, CA 927081558771188

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.