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 318 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. Phuong Tran, DOGarden Grove, CA 928441295295343
  2. Quan Tran, MDStanford, CA 943051497443337
  3. Quynh Chi Tran, MDBakersfield, CA 933091548252786
  4. Richard Tran, M.D.Encinitas, CA 920241578883385
  5. Ryan Tran, M.D.Murrieta, CA 925631801998174
  6. Scott Tran, M.D.Anaheim, CA 928041922183342
  7. Tanya Tran, D.O.Temecula, CA 925921134319429
  8. Thang Tran, MDSan Jose, CA 951221275514069
  9. The-Huy Tran, M.D.Redlands, CA 923731487693172
  10. Thomas Tran, MDCorona, CA 928821710972997
  11. Thu-Nga Tran, MDAnaheim, CA 928071174675540
  12. Thuy Tran, D.O.San Francsico, CA 941091952613606
  13. Thuy-An Tran, MDOakland, CA 946071760919021
  14. Thuyhan Tran, M.D., M.P.H.Huntington Beach, CA 926481467476614
  15. Tiffany Tran, MDSanta Clara, CA 950511417229501
  16. Timothy Tran, MDLos Angeles, CA 900271922170406
  17. Tin Tran, MDBaldwin Park, CA 917061871642157
  18. Tina Tran, MDSan Marcos, CA 920781285263830
  19. Tinh Tran, MDGarden Grove, CA 928411003879685
  20. Toan Tran, M.D.Westminster, CA 926831720160336
  21. Toan Tran, M.D.Milpitas, CA 950351588683031
  22. Tracy Tran, DOFountain Valley, CA 927081184893133
  23. Tuan Tran, M.D.Fresno, CA 937251285638916
  24. Tuan Tran, MDStockton, CA 952101376622068
  25. Tuyet Tran, MDNovato, CA 949451245848167
  26. Vicki Trang Tran, M.D.Los Angeles, CA 900951881828952
  27. Viet Tran, D.O.Anaheim, CA 928061043611098
  28. Vivian Tran, M.D.San Diego, CA 921081427492891
  29. Wayne Tran, MDSan Francisco, CA 941431417156126
  30. Binh Tran-Lei, D.O.West Covina, CA 917921659561645
  31. Alexandra Tran-Perez, M.D.San Jose, CA 951191689695090
  32. Melody Tran-Reina, MDSacramento, CA 958201407280803
  33. Khanhphi Tran-VuSacramento, CA 958171235715160
  34. Dong Trang, D.O., M.P.HGardena, CA 902471609013762
  35. Sergio Trani, M.D.Paramount, CA 907231891720884
  36. Minh TrannguyenFresno, CA 937011366948093
  37. Arthur Traum, M.D.Palo Alto, CA 943041902918303
  38. Josefina Trausch, MDChula Vista, CA 919141295764421
  39. Eric Trautwein, M.D.Santa Barbara, CA 931081073615126
  40. Bridgit Travinsky, M.D.Rohnert Park, CA 949281295153930
  41. Nancy Tray, MDMonterey, CA 939401306112677
  42. Allan Treadwell, M.D.San Francisco, CA 941171477575744
  43. Madeline TreasureLos Angeles, CA 900951093341984
  44. David Trefflich, MDSanta Maria, CA 934581861836942
  45. Yogesh Trehan, M.D.Brentwood, CA 945131255372769
  46. Catherine Trejo, MDMountain View, CA 940401144307075
  47. Emma Trejo, MDWilmington, CA 907441043387954
  48. Nicole Tremain, M.D.San Diego, CA 921231518922392
  49. Paula Tremayne, D.O.Modesto, CA 953551740368554
  50. Rajinder Trewn, MDSacramento, CA 958341649246448

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.