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 129 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. Diana Hsu, M.D.Downey, CA 902421720090137
  2. Eric Hsu, MDArcadia, CA 910071982282356
  3. Ethan HsuLancaster, CA 935361982270401
  4. Everett Hsu, MDOakland, CA 946111215015086
  5. Goethe Hsu, M.D.Downey, CA 902421386656726
  6. Harold Hsu, M.D.Rosemead, CA 917701770508111
  7. Henry Hsu, MDHillsborough, CA 940101346735115
  8. Jerry HsuStanford, CA 943051891977757
  9. Jiachiahn Hsu, MDTorrance, CA 905031942478086
  10. John Hsu, MDOakland, CA 946121518045186
  11. Judy Hsu, MDSan Francisco, CA 941331043384050
  12. Larry Hsu, MDChico, CA 959261215935622
  13. Maria Cristina Hsu, MDAnaheim, CA 928071497803472
  14. Robert Hsu, M.D.Auburn, CA 956021619059748
  15. Roger Hsu, MDLos Angeles, CA 900891467254292
  16. Sarah Hsu, MDSan Francisco, CA 941101861135071
  17. Thomas Hsu, MDCupertino, CA 950141134153372
  18. Victor Hsu, MDSan Francisco, CA 941021437491156
  19. Vincent Hsu, MDSanta Monica, CA 904011750955134
  20. Yio-Fan Hsu, M.D.Orange, CA 928691588989529
  21. Andrea Hsue, M.D.Redding, CA 960011932492170
  22. Frank Hsueh, M.D.San Ramon, CA 945831144224742
  23. Soe Htay, M.D.Wasco, CA 932801225059827
  24. Thein Htay, M.D.Alhambra, CA 918011861594228
  25. Lwin Htun, M.D.San Jacinto, CA 925831881884609
  26. Michelle Htun, M.DFremont, CA 945381053401125
  27. Nang Zar Che Htun, MDModesto, CA 953551972882223
  28. Sandar HtunDaly City, CA 940151881019891
  29. Thi Htway, M.D.Huntington Park, CA 902551144595190
  30. Yinn Htwe, M.DSan Jose, CA 951281982967493
  31. Catherine Hu, M.D.San Francisco, CA 941151972521078
  32. Charles Hu, D.O.Whittier, CA 906021699038042
  33. Edward Hu, DOSacramento, CA 958161386494516
  34. Grace Hu, MDLos Angeles, CA 900271629149695
  35. Xuchen HuLos Angeles, CA 900951639756612
  36. Yu-Chen Hu, M.D.San Francisco, CA 941091023332988
  37. Siwen Hu-Lieskovan, MD, PHDLos Angeles, CA 900951578864864
  38. Duong Hua, MDTorrance, CA 905021265852719
  39. Johnson Hua, M.D.Santa Monica, CA 904041326224080
  40. Kenneth Hua, MDModesto, CA 953551609824382
  41. Long Hua, MDFountain Valley, CA 927081376046185
  42. Nathan Hua, MDSan Diego, CA 921151619471232
  43. Susan Hua, MDBaldwin Park, CA 917061235200213
  44. Van Hua, M.D.Alhambra, CA 918031215175120
  45. Lawrence Huan, MDSonoma, CA 954761881986206
  46. Albert Huang, MDSan Francisco, CA 941091760132294
  47. Alison Huang, MDSan Francisco, CA 941431043278179
  48. Brian Huang, M.D.West Hollywood, CA 900481194014423
  49. Cecilia Huang, MDSacramento, CA 958171053781633
  50. Chao Huang, D.O.Los Angeles, CA 900151710177928

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.