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 321 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. Wendy Tseng, MDRedwood City, CA 940631124106760
  2. Wendy Tseng, M.D., M.S.South San Francisco, CA 940801609296680
  3. William Tseng, MDSan Diego, CA 921201093874752
  4. Zian Tseng, M.D.San Francisco, CA 941431487691622
  5. Rebecca Tsevat, MDLos Angeles, CA 900951447756994
  6. Allen Tsiyer, MDTemecula, CA 925921023767852
  7. Earl Tso, M.D.Los Angeles, CA 900121831121474
  8. Florence Tso, MDOakland, CA 946111821176611
  9. Geoffrey Tso, MDPalo Alto, CA 943051871859892
  10. Vivian Tso, MDSan Diego, CA 921211851372189
  11. David Tsong, M.D.Huntington Beach, CA 926471942228739
  12. Evonne Tsou, MDWalnut Creek, CA 945961457439952
  13. Jessica Tsuei, MDWalnut Creek, CA 945981447756796
  14. Michelle Tsukamoto, D.O.Los Angeles, CA 900891518287960
  15. Michelle Tsukamoto, MDIrvine, CA 926181417311739
  16. Ted Tsukayama, MDOakland, CA 946111134207921
  17. Scott Tsunehara, MDDaly City, CA 940151043398662
  18. Chris Tsuneishi, M.D.Torrance, CA 905031669425575
  19. Soa Tsung, MDMenlo Park, CA 940251992810063
  20. Akiko Tsuzuki, MDOakland, CA 946111679651459
  21. Joey Tu, MDSanta Monica, CA 904041720408305
  22. Jyeping Tu, M.D.Auburn, CA 956021518940303
  23. Stanley Tu, M.D.Pasadena, CA 911061215011879
  24. William Tu, MDWoodland Hills, CA 913671346260502
  25. Katherine Tuan, M.D.Downey, CA 902421588907315
  26. Luzcel Tuazon, MDModesto, CA 953501306990817
  27. Charles Tuchinda, M.D.Los Altos, CA 940241063641702
  28. Irina TuchinskyOxnard, CA 930301801086988
  29. Bruce Tucker, M.D.Santa Rosa, CA 954031780677054
  30. Douglas Tucker, MDSunnyvale, CA 940861619057593
  31. Harvey Tucker, MDSan Francisco, CA 941071902167950
  32. Shirley Tucker-Harris, M.D.Oakland, CA 946091285749762
  33. Leah Tudtud-Hans, M.D.Loma Linda, CA 923541972616860
  34. Fehma Tufail, MDBakersfield, CA 933041659446011
  35. Shahaf Tuler, MD, MSRancho Mirage, CA 922701740847995
  36. Radhika Tulpule, M.D.Covina, CA 917231801829437
  37. Jacqueline Tulsky, MDSan Francisco, CA 941101487761227
  38. Lily Tumbaga-Notario, M.D.Lodi, CA 952401710910336
  39. Giri Tummuru, M.D.Yorba Linda, CA 928861467625277
  40. Marie Tumusok, M.D.Davis, CA 956161437340015
  41. Aye Tun, M.D.Carmichael, CA 956081487940995
  42. Ei Tun, MDSanta Clara, CA 950511184366775
  43. Jeffery Tun, M.D.Ridgecrest, CA 935551598119083
  44. Nyi Tun, M.D.Carmichael, CA 956081982862090
  45. Tin Tun, MDHemet, CA 925451629001698
  46. Zin Nwe Nwe Tun, M.DMcClellan, CA 956521396196564
  47. Lerzan Tunali Madenci, M.D.Santa Maria, CA 934541659504181
  48. Aiting Tung, MDWoodland Hills, CA 913671184772998
  49. Ronald Tung, M.D.Northridge, CA 913251841375425
  50. Robert Tungate, MDLos Angeles, CA 900331831658947

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.