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 185 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. Rebecca Little, M.D.Santa Monica, CA 904041164954434
  2. Susan Little, M.D.San Diego, CA 921031033134572
  3. Felix LitvakSan Francisco, CA 941211629495791
  4. Mona Litvak, M.D.Redwood City, CA 940631578610317
  5. Timothy Litwin, D.O.Oakland, CA 946021891032421
  6. Albert Liu, MDSan Francisco, CA 941101326153768
  7. Amy Liu, MDSan Rafael, CA 949031245319383
  8. Andy Liu, MDSan Francisco, CA 941151285082446
  9. Anne Liu, MDLa Jolla, CA 920371891257127
  10. Audrey Liu, MDSan Jose, CA 951281861029290
  11. Chuchu Liu, DOSan Diego, CA 921341689174351
  12. Clara Liu, DORiverside, CA 925011265182067
  13. Conan LiuSacramento, CA 958171023646999
  14. David Liu, M.D.San Diego, CA 921031730244252
  15. David Liu, MDFontana, CA 923351073661856
  16. Dennis Liu, MDArcadia, CA 910071629164520
  17. Derek Liu, MDStanford, CA 943051861133563
  18. Eric Liu, M.D.San Diego, CA 921301609865377
  19. Eunice Liu, D.O.Martinez, CA 945531851575310
  20. Eva Liu, MDSouth San Francisco, CA 940801538247143
  21. Flora Liu, MDLos Angeles, CA 900331134755101
  22. Gabrielle Liu, M.D.Sacramento, CA 958161750743225
  23. Hau Liu, MDMilpitas, CA 950351376617688
  24. James Liu, M.D.Sacramento, CA 958161740381029
  25. Jeffrey Liu, DOLos Angeles, CA 900341437724218
  26. Jenny Liu, D.O.San Jose, CA 951281003444290
  27. Jerry Liu, MDStanford, CA 943051336644178
  28. Jessica LiuBerkeley, CA 947021922442383
  29. Jiandong Liu, MDWest Covina, CA 917911649238130
  30. John Liu, MDLos Angeles, CA 900171881734465
  31. Joshua Liu, M.D.Stanford, CA 943051649665795
  32. Joy LiuOakland, CA 946021669008629
  33. Judy Liu, M.D.San Francisco, CA 941091982929378
  34. Jun Liu, MDIrvine, CA 926181770669319
  35. Kathleen Liu, M.D.San Francisco, CA 941431518996693
  36. Kelli LiuSan Diego, CA 921031437808292
  37. Les Liu, MDFontana, CA 923351386703999
  38. Li Liu, M.D.Monterey Park, CA 917541295722627
  39. Lisa Liu, M.D.Santa Clara, CA 950511780039479
  40. Michael LiuAnaheim, CA 928061881896520
  41. Nancy Liu, MDStanford, CA 943051831727296
  42. Paul Liu, M.D.Los Angeles, CA 900951114111283
  43. Quanjing Liu, MDSunnyvale, CA 940861760588834
  44. Robert LiuFontana, CA 923351386178002
  45. Rona Liu, MDCorona, CA 928801952592297
  46. Timothy Liu, M.D., M.S.Kentfield, CA 949041134495450
  47. Wenhui Liu, MDSan Diego, CA 921201689733321
  48. Wilson Liu, D.O.Los Angeles, CA 900261326496167
  49. Wu Liu, M.D.El Monte, CA 917321871512749
  50. Xibei Liu, MDWest Hollywood, CA 900481437682796

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.