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 269 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. Fredrick Russo, MD.Porter Ranch, CA 913261457370074
  2. Robert Russo, MDSan Carlos, CA 940701740293661
  3. Laura Russo Herrera, MDVisalia, CA 932911487838660
  4. Alison Rustagi, MD, PHDSan Francisco, CA 941211134623093
  5. Parvine Rustamova, M.D.Tarzana, CA 913561730506882
  6. Saliar Rustem, M.D.Redlands, CA 923731407039563
  7. Richard Ruth, M.D.La Palma, CA 906231700804986
  8. Keino Rutherford, MDSherman Oaks, CA 914031497807853
  9. Geoffrey Rutledge, M.D.Menlo Park, CA 940251689902082
  10. Amy Rutman, MDBeverly Hills, CA 902111649311705
  11. Michael Rutman, D.O.Encinitas, CA 920241245303122
  12. Brenda Ruvalcaba, M.D.Sacramento, CA 958171205235124
  13. Paul Ryack, MDSanta Barbara, CA 931111356375398
  14. Brinda Ryali, MDSan Francisco, CA 941431528647765
  15. Dana Ryan, DR.Alpine, CA 919011780609990
  16. Emily Ryan, MDNorthridge, CA 913251255565230
  17. Laura Ryan, M.D.Downey, CA 902411114344173
  18. Michelle Ryan, MDLos Alamitos, CA 907201568511913
  19. Misty Rydelski, MDTustin, CA 927801609889120
  20. Armand Ryden, M.D.Los Angeles, CA 900951073777041
  21. Jeanette Rylander, M.D.Fresno, CA 937011780802785
  22. Faysal Saab, M.D.Los Angeles, CA 900951164797205
  23. Hussien Saab, MDLaguna Hills, CA 926531245752500
  24. Mena Saad, DOMoreno Valley, CA 925551427746106
  25. Katayun Saadai, MDOrange, CA 928681225358989
  26. Afshin Saadat, MDSan Dimas, CA 917731508856154
  27. Dana Saadat, M.D., PH.D.Bellflower, CA 907061346384385
  28. Farid Saadat, MDLake Elsinore, CA 925301891767935
  29. Mohsen Saadat, D.O.French Camp, CA 952311356362958
  30. Vandad SaadatWest Hollywood, CA 900481598299067
  31. Zainab SaadiLos Angeles, CA 900231750724514
  32. Henry Saalwaechter, M.D.Modesto, CA 953551639128721
  33. Elizabeth Saarni, M.D.San Diego, CA 921101619974755
  34. David Saavedra, MDPasadena, CA 911071659448546
  35. Jose Saavedra, MDLos Angeles, CA 900271164593059
  36. Sheeda SabaSan Diego, CA 921031134574858
  37. Mojtaba Sabahi, M.D.Long Beach, CA 908061205881091
  38. Ma Sabai, M.DSan Francisco, CA 941161902021900
  39. Anusha Sabanayagam, M.D.Santa Barbara, CA 931051780318626
  40. Charles Sabbah, M.D.Rialto, CA 923761467491118
  41. Ghaleb Sabbah, MDPalm Springs, CA 922621376525824
  42. Aidin Sabet, M.D.San Francisco, CA 941151497059364
  43. Sara SabetiIrvine, CA 926041598414815
  44. Umesh Sabharwal, M.D.Redwood City, CA 940621831192160
  45. Nasreen Sabir, MDFlintridge, CA 910111306990494
  46. Oscar Sablan, MDFirebaugh, CA 936221710973060
  47. Victor Sabo, MDRedding, CA 960031346264728
  48. Sussan Saboor, M.DEl Dorado Hills, CA 957621922389774
  49. Saman Sabounchi, M.DSan Jose, CA 951271215257894
  50. Ahlam Sabri, M.D.El Centro, CA 922431346627809

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.