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 214 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. Margaret Mou, DOFontana, CA 923351780732735
  2. Christie Moua, MDSan Carlos, CA 940701245756451
  3. Bonnie Moura, M.D.Los Angeles, CA 900331487628459
  4. Dana Mourad, MDSan Diego, CA 921301942865456
  5. Michelle Mourad, M.D.San Francisco, CA 941431073712261
  6. Lori Mouratoff, M.D.Berkeley, CA 947051790937506
  7. George Mousa, MDSan Bernardino, CA 924041144711821
  8. Roger Moushabek, M.D.Victorville, CA 923951073541157
  9. Ameer Moussa, M.D.Huntington Beach, CA 926471942436225
  10. Carrie Mousseau, M.D.Los Altos, CA 940221447387451
  11. Sharareh Movafagh-Tofigh, M.D., PH.D.Moreno Valley, CA 925531669631016
  12. Bijan Movafegh-Jooryabi, D.OLaguna Hills, CA 926531497760219
  13. Zohreh Movahedi-Smith, MDWoodland Hills, CA 913671134511082
  14. Katherine MowerLoma Linda, CA 923541629632740
  15. Brad Moy, M.D.San Francisco, CA 941091720148505
  16. Donald Moy, M.D.Woodland Hills, CA 913671922429513
  17. Eileen Moy, MDMenlo Park, CA 940251083617583
  18. Frederic Moy, MDSanta Clara, CA 950511992882831
  19. Janice Moy, MDSan Jose, CA 951191336211150
  20. Richard Moyer, M.D.San Bernardino, CA 924041033291257
  21. Robin Moyer, MDSan Diego, CA 921611023065497
  22. Eh Mu, MDManteca, CA 953371134207038
  23. Sam Mubara, MDPorter Ranch, CA 913261669066759
  24. Sunder Mudaliar, M.D.San Diego, CA 921611750330346
  25. Dawn Mudge, M.DSalinas, CA 939011437156650
  26. Onkar Mudhar, MDModesto, CA 953501780213579
  27. Swetha Mudunuri, M.D.,Cameron Park, CA 956821700149150
  28. Mark Mueller, MDMurrieta, CA 925621083607295
  29. Michael Muellner, M.D.Los Angeles, CA 900271073959094
  30. Hoveda Mufti, M.D.Fontana, CA 923351598871493
  31. Mutuhi Mugo, M.DEl Cajon, CA 920201730326257
  32. Khurshid Muhammad, MDRoseville, CA 956611205975992
  33. Amer Muhyieddeen, MDFresno, CA 937011508328527
  34. Andrew Mui, M.D.La Palma, CA 906231992135826
  35. Byron Mui, MDBakersfield, CA 933011891972121
  36. Chung-Yuan Mui, MDSacramento, CA 958251366520074
  37. David Mui, MDStanford, CA 943051144917709
  38. Anthony Muiru, MDSan Francisco, CA 941431700148517
  39. Prabhat Mukerjee, M.D.Pasadena, CA 911011306136759
  40. Ritu Mukerji-Metzger, MDNovato, CA 949451023156023
  41. Chaitali Mukherjee, M.D.Los Angeles, CA 900951649478207
  42. Manjari Mukherjee, MDSanta Clara, CA 950511891823795
  43. Nikhil Mulchandani, M.D.Vacaville, CA 956881710279146
  44. Timothy Muldoon, M.D.Sacramento, CA 958171154783983
  45. William Muldowney, MDMountain View, CA 940401417034356
  46. Sana Mulla, MDApple Valley, CA 923071710547476
  47. Michael Mullaney, M.D.Orange, CA 928691427378124
  48. Evan Mullen, MDStanford, CA 943051760132211
  49. Rikki Mullen, MDLos Angeles, CA 900951306266622
  50. Andrew Muller, MDPasadena, CA 911051710031893

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.