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 17 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. Meri Rathbun, MDWhittier, CA 906021336349299
  2. James Rau, M.D.Santa Monica, CA 904021528130671
  3. Brianna Ray, D.O., M.P.H.Colton, CA 923241477915932
  4. Manoj Ray, M.D.Redwood City, CA 940631831328988
  5. Sayan Ray, M.D.Orange, CA 928681881607653
  6. Kristin Razzeca, M.D.Mountain View, CA 940401275540460
  7. Archana Reddy, MDSacramento, CA 958171740667047
  8. Jagadeesh Reddy, M.D.Laguna Beach, CA 926511083610703
  9. Laya Reddy, M.D.San Diego, CA 921031861928921
  10. Manthani Reddy, M.D.Fresno, CA 937201073523916
  11. David Redfield, M.D.La Jolla, CA 920371164486973
  12. Caitlin Reed, M.D.Sylmar, CA 913421073634184
  13. Sharon Reed, M.D.San Diego, CA 921031710902044
  14. Michael Reid, MDSan Francisco, CA 941101912137951
  15. David Relman, M.D.Palo Alto, CA 943041326136706
  16. Karen Relucio, MDSan Mateo, CA 944031952471484
  17. Cybele RenaultSan Mateo, CA 944031427100965
  18. Dalilah Restrepo, MDFountain Valley, CA 927081396816393
  19. Marvin Reyes, M.D.Fountain Valley, CA 927081356378160
  20. David Rhew, M.D.Los Angeles, CA 900191992900815
  21. Juan Ricaurte, M.D.Los Angeles, CA 900271427046341
  22. Douglas Richman, MDSan Diego, CA 921611215033303
  23. Natalie Richmond, MDSan Francisco, CA 941431972131803
  24. Gunter Rieg, M.D.Long Beach, CA 908131528096138
  25. Phyllis Ritchie, MDPalm Springs, CA 922621245255736
  26. Jethro Ritter, D.O.San Luis Obispo, CA 934011457330797
  27. Michele Ritter, M.D.San Diego, CA 921031225262975
  28. Makeda Robinson, MDStanford, CA 943051093007395
  29. Philip Robinson, MDNewport Beach, CA 926631205810066
  30. Jorge Robledo, MDLoma Linda, CA 923541467913640
  31. Arleen Rockoff, MDWoodland Hills, CA 913671649339268
  32. Axana Rodriguez-Torres, MD, MPHSacramento, CA 958171649856105
  33. Daniel Rogstad, MDLoma Linda, CA 923541134358252
  34. Fabian Romero, M.D.Daly City, CA 940151912295445
  35. James Rooney, M.D.Foster City, CA 944041306079512
  36. Annelys Roque GardnerSan Francisco, CA 941431487048799
  37. Gisela Rosario Rosario, M.D.Los Angeles, CA 900481073873733
  38. Bakht Roshan, MDMadena, CA 936371639201502
  39. Joelle Rosser, MDStanford, CA 943051528485547
  40. Peter Ruane, MDLos Angeles, CA 900361467640953
  41. Zachary Rubin, MDLos Angeles, CA 900951912931395
  42. Luis Rubio, MD, MHSSan Francisco, CA 941431366804403
  43. Sarah Rudman, MDSan Francisco, CA 941431679892871
  44. Joel Ruskin, MDLos Angeles, CA 900271982763546
  45. Arjun Rustagi, M.D., PH.D.San Francisco, CA 941211346635083
  46. Rachel Rutishauser, PH.D.San Francisco, CA 941101891085833
  47. Robert Ryder, MDFort Bragg, CA 954371780757070
  48. Saghar Saber, M.DLos Angeles, CA 900371023405099
  49. Chitra Safaya, MDSan Diego, CA 921201568624336
  50. Ashlyn SakonaLos Angeles, CA 900951053739961

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.