NPPES file of Aug 9, 2026

Infectious Disease Physician in California

1,119 NPPES records list infectious disease physician with a practice address in California, 2.9 per 100,000 residents, the 25th 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 13 of 23.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RI0200X · 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, 147

  1. Los Angeles147
  2. San Francisco108
  3. San Diego76
  4. Stanford58
  5. Sacramento56

Infectious Disease Physician records in California

  1. Ashwini Mallad, MDApple Valley, CA 923071477968006
  2. Sudhakar Mallela, M.D.Riverside, CA 925061851498729
  3. Ossama Maloule, M.D.Pomona, CA 917671033226949
  4. David Man, MDPasadena, CA 911051366450637
  5. Archana Maniar, M.D.Sacramento, CA 958171629058664
  6. Jessica Mantilla, MDGlendale, CA 912031891957973
  7. Patrice Marcarelli, MDLong Beach, CA 908071760455000
  8. Stephen Marer, MDLos Angeles, CA 900331043281322
  9. Rina Marfatia, M.B.B.S., M.D.Greenbrae, CA 949041508055138
  10. Karen Mark, M.D. MPHSacramento, CA 958111750491122
  11. Carina Marquez, M.D.San Francisco, CA 941431447587928
  12. Dianne Martin, MDFremont, CA 945381720162969
  13. Elise MartinLos Angeles, CA 900951952604613
  14. Shilpa Marwaha, MDNovato, CA 949451235396235
  15. Hera MaryamSanta Monica, CA 904041164047585
  16. Joseph Marzouk, M.D.Oakland, CA 946111174636393
  17. Elizabeth Maslow, M.D.Shadow Hills, CA 910401235194556
  18. Eriko Masuda, MDLos Angeles, CA 900591992123095
  19. William Mathews, M.D.San Diego, CA 921031194773259
  20. Glenn Mathisen, MDLos Angeles, CA 900951376564948
  21. Belen Matias, M.D.Northridge, CA 913251881874691
  22. Peter Matthews, MDTravis Afb, CA 945351487758694
  23. Isam Mawas, MDCulver City, CA 902321790971422
  24. Richard Mayer, M.D.San Diego, CA 921171689773640
  25. Mark Mazur, MDThousand Oaks, CA 913601245328228
  26. Robert McCabe, MDPleasanton, CA 945661073586905
  27. John McCarthyWhittier, CA 906031679650923
  28. Max McClureSan Francisco, CA 941101336601871
  29. Randy McCreery, MDSacramento, CA 958161528440971
  30. Philip McDonald, M.D.Thousand Oaks, CA 913611952644122
  31. Jessica McFarland, MDFresno, CA 937011932661840
  32. Jack McGregor, MDSan Francisco, CA 941091053949974
  33. James McKinnell, M.D.Torrance, CA 905021942403035
  34. Noah McKittrick, MDPalo Alto, CA 943011902197312
  35. Andrew McNeil, MDSacramento, CA 958231396946281
  36. Xolani Mdluli, MDPalm Springs, CA 922621043418023
  37. Natalia Medvedeva, MDStanford, CA 943051053848333
  38. Seema Mehta Steinke, M.D.. M.SC.Los Angeles, CA 900951346493053
  39. Gregory Melcher, MDSan Francisco, CA 941141508846387
  40. Sutton Menezes, M.D.Redding, CA 960011154332161
  41. Timothy Mess, M.D.Van Nuys, CA 914051043280076
  42. Peter Miao, M.D.Sherman Oaks, CA 914031164465886
  43. Nanette Mickiewicz, MDSanta Cruz, CA 950651558319079
  44. Anthony Milanes, M.D.Bakersfield, CA 933091740292036
  45. Eric Milefchik, MDTorrance, CA 905051851362131
  46. Matthew Miles, M.D.Redding, CA 960011467431700
  47. David Miller, M.D.Pleasanton, CA 945661306000393
  48. Herman Miller, MDLa Jolla, CA 920371881631158
  49. Larry Miller, MDSan Diego, CA 921201578611364
  50. Loren Miller, M.D.Torrance, CA 905021346286606

Source: CMS NPPES, primary taxonomy 207RI0200X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 25 of 51 per resident

  1. Vermont2.9
  2. Hawaii2.9
  3. Wisconsin2.9
  4. California2.9
  5. Louisiana2.8
  6. Virginia2.8
  7. 50 states and D.C.3.2

Source: CMS NPPES, primary taxonomy 207RI0200X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

78.6% of these records appear in a Medicare file, against 79.0% 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. California78.6%
  2. United States79.0%

Infectious Disease Physician records in California, measured

  • In a Medicare file880 of 1,119 · 78.6% here, 79.0% nationally
  • In the CMS Doctors and Clinicians file735 · 65.7% here, 68.4% nationally
  • Not updated in five years or more657 · 58.7% here, 56.5% nationally
  • Median graduation year2003 · the 735 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RI0200X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,119 NPPES records list infectious disease physician (207RI0200X) as their primary taxonomy with a practice address in California: 2.9 per 100,000 residents against 3.2 nationally (50 states and D.C.). Los Angeles has 147 of them (13%).

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 York970
  2. Florida760
  3. Texas674
  4. Pennsylvania545

States with a similar rate per 100,000

  1. Wisconsin2.9
  2. Hawaii2.9
  3. Vermont2.9
  4. Louisiana2.8

The largest states

  1. New York970
  2. Florida760
  3. Texas674
  4. Pennsylvania545
  5. Massachusetts487

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.