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 193 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. Mani Mahdyoon, MDLodi, CA 952401144232349
  2. Lakshmi Mahendran, M.D.Cupertino, CA 950141083887665
  3. Daniel Maher, MDSan Diego, CA 921341346211547
  4. Chaitanya Mahida, M.D.Oakdale, CA 953611639189616
  5. Michael Mahig, MDSalinas, CA 939011578699872
  6. Kiran Mahl-Sansone, M.D., INC.Vista, CA 920831245276815
  7. Elizabeth Mahler, M.D.Berkeley, CA 947051972611192
  8. Nathan Mahler, M.D.Riverside, CA 925011679009294
  9. Aysha Mahmood, MDSacramento, CA 958251689752362
  10. Bilawal Mahmood, MDSacramento, CA 958171841883246
  11. Fizza Mahmood, MDLos Angeles, CA 900891013690692
  12. Khalid MahmoodRedding, CA 960011508516766
  13. Mehvish Mahmood, M.D.Livermore, CA 945511609217314
  14. Mubashar Mahmood, MDSacramento, CA 958251518045269
  15. Omar Mahmood, M.B.CH.B.Fresno, CA 937011225597172
  16. Reshma Mahmood, MDArroyo Grande, CA 934201881625069
  17. Saima Mahmood, MDCastro Valley, CA 945521477555811
  18. Tahir MahmoodSacramento, CA 958171447879184
  19. Javid Mahmoodi, MDSacramento, CA 958161477114791
  20. Amro Mahmoud, DOSantee, CA 920711114433687
  21. Samir Mahmoud, MDConcord, CA 945211245214931
  22. Mohammad Mahmud, MD, MPH, PHDCorona, CA 928791164513784
  23. Sarwat Mahmud, M.D.Torrance, CA 905051982785713
  24. Pantea Mahtosh, M.D.San Jose, CA 951201689852600
  25. Ann Mai, MDIrvine, CA 926041215001904
  26. Chinh Mai, MDWestminster, CA 926831992017636
  27. Denise Mai, MDSan Diego, CA 921031063076156
  28. Kelvin Mai, DOSanta Ana, CA 927031326072612
  29. Kenny Mai, D.OSan Diego, CA 921261760703623
  30. Thi Bich Ngoc Mai, MDAnaheim, CA 928011629496062
  31. Veronica Mai, DOEscondido, CA 920291255033916
  32. Vinh Mai, D.O.San Bernardino, CA 924041992887293
  33. Eyal Maidan, M.D.Los Angeles, CA 900491235422486
  34. Gevork Maissian, D.O.Glendale, CA 912011639320658
  35. Amrapali Maitra, MDStanford, CA 943051801386826
  36. Shirin Majdizadeh, M.D.Orange, CA 928691700135126
  37. Ammara Majeed, MDSan Jose, CA 951191770147027
  38. Azhar Majeed, MD, MBA, FACPPomona, CA 917671295802155
  39. Yasamin Majeed, MDLoma Linda, CA 923541093278301
  40. Nabil Majid, MDCarmichael, CA 956081700841830
  41. Syed Majid, MD, FRCP, FASAMSan Jose, CA 951161225009533
  42. Maulik Majmudar, M.D.Irvine, CA 926141346395100
  43. Rohit Majumdar, MDChula Vista, CA 919101730574666
  44. Tanya Majumder, M.D.San Francisco, CA 941021417304825
  45. Melanie Majure, M.D.Stanford, CA 943051255639969
  46. Nancy Mak, MDMilpitas, CA 950351780761619
  47. Yinchong Mak, MDPalo Alto, CA 940401982930491
  48. Rowena Mak-Huang, M.D.Moreno Valley, CA 925571255692349
  49. Arjun Makam, D.O.Anaheim, CA 928011669732749
  50. Lakshman Makandura, M.DWest Covina, CA 917901578614657

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.