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 315 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. Sean To, M.D.Chino, CA 917101922163310
  2. Tet Toe, MDFolsom, CA 956301710132733
  3. Salar Tofighi, MDMendota, CA 936401912648247
  4. Rogelio Toh, M.D.Rialto, CA 923761114998077
  5. Elif Tokcan - Talegon, MDSan Rafael, CA 949031912094590
  6. Seiya Tokunaga, DOOxnard, CA 930301629572334
  7. Swati Tole, M.D.Stanford, CA 943051518037779
  8. Ryan ToledoSan Francisco, CA 941431295430015
  9. Arturo Tolentino, M.D.San Marcos, CA 920691609066018
  10. Milagros Tolentino, MDClearlake, CA 954221245212505
  11. Naty Tolentino, MDNorco, CA 928601003008053
  12. Anastasia Toles, MDStanford, CA 943051255579892
  13. Jeffrey Toll, M.D.Los Angeles, CA 900671558772350
  14. Colton TomOakland, CA 946111336729730
  15. Michael Tom, D.O.Fresno, CA 937031518996230
  16. Thomas Tom, MDLos Angeles, CA 900271376610238
  17. Zachary TomTorrance, CA 905021629605084
  18. Maha Toma, M.D.Lafayette, CA 945491427108125
  19. Megan Tomajan, MDFresno, CA 937011407317076
  20. Samuel Tomich, MDTorrance, CA 905051871947390
  21. Tommy Tomizawa, M.D.Beverly Hills, CA 902111477566040
  22. Stephen Tomlanovich, MDSan Francisco, CA 941431528022670
  23. Treise Tomlinson-Chesnut, M.D.Newbury Park, CA 913201710970884
  24. Binh Ton, MDMilpitas, CA 950351205915337
  25. Thomas Ton, M.DGarden Grove, CA 928411912018789
  26. Julianne TondreSacramento, CA 958161154783009
  27. Allen Tong, M.D.Sacramento, CA 958161841467701
  28. Anhtuan Tong, MDTorrance, CA 905041508953936
  29. Brandon Tong, D.O.Fontana, CA 923361508151036
  30. Dan Tong, MDSan Diego, CA 921201649328675
  31. Douglas Tong, M.D.San Jose, CA 951291811905094
  32. Elisa Tong, MDSacramento, CA 958171124082144
  33. Ian TongPalo Alto, CA 943041023043478
  34. Jennifer Tong, MDSan Jose, CA 951281760576649
  35. Julia TongSan Jose, CA 951281023578721
  36. Kathleen Tong, M.D.San Francisco, CA 941431225013923
  37. Stacy Tong, DOCampbell, CA 950081801973748
  38. Sigve Tonstad, M.D.Loma Linda, CA 923541043499098
  39. Charerntas Toochinda, MDFontana, CA 923351962550855
  40. Kirandeep Toor, M.DMadera, CA 936371528269602
  41. Antonio Topacio, MDLong Beach, CA 908061518225325
  42. Ajay Toppur Ramanakumar, M.DStockton, CA 952041659539153
  43. Saeed Torabzadeh, MDAnaheim, CA 928071952453318
  44. Simin Torabzadeh, MDOrange, CA 928681336233600
  45. Adrian TorbelaAtascadero, CA 934221457970998
  46. Stefan Torelli, MDStanford, CA 943051942887419
  47. Elena Torello, MDSan Francisco, CA 941151720166218
  48. Edina Torlak, MDCarmichael, CA 956081780751321
  49. Mauro Torno, M.D.Long Beach, CA 908151144222803
  50. Kelly Torosian, MDSan Diego, CA 921031801422761

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.