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 181 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. Theodore Liang, MDHarbor City, CA 907101528116316
  2. Liana Lianov, MD MPHSacramento, CA 958141174781595
  3. Charles Liao, M.D.Stanford, CA 943051891001079
  4. Chin Liao, MDSanta Clara, CA 950511083793129
  5. Jessica Liao, M.D.Santa Monica, CA 904041851528442
  6. Jimmy Liao, M.D.Fullerton, CA 928351104965383
  7. Peter Liao, M.D.Riverside, CA 925061093866469
  8. Timothy Liao, MDSouth San Francisco, CA 940801114005733
  9. Victor Liao, DOLancaster, CA 935341760007116
  10. Xiang Liao, MDRichmond, CA 948011396820056
  11. Xin Liao, M.D.Redwood City, CA 940631245659598
  12. Nasser Liasi, MDFontana, CA 923351144466780
  13. Joanna Libby, MDNewport Beach, CA 926601891283362
  14. Martin Liberman, MDSan Francisco, CA 941091376530006
  15. Miryam Liberman, M.D.Westlake Village, CA 913611013921634
  16. Alla Liberstein, M.D.Porterville, CA 932571164613899
  17. Juancho Libiran, M.D.Union City, CA 945871114004074
  18. Charlene Lichtash, M.D.Beverly Hills, CA 902111134363336
  19. David Lichtenfeld, MDBishop, CA 935141902484132
  20. Bernard Lichtenstein, M.D.San Diego, CA 921231104878073
  21. Jesse Licuanan, M.D.Lakewood, CA 907121396795514
  22. Rhea Licuanan, M.D.Oroville, CA 959661609864388
  23. Ariadne Lie, MDEmeryville, CA 946081245243484
  24. Gary Lieb, M.D.Camarillo, CA 930101912935396
  25. Mark Lieber, MDLos Angeles, CA 900331467072678
  26. Ethan Lieberman, MDVentura, CA 930031013650951
  27. Spencer Liebman, M.D.Los Angeles, CA 900331548647605
  28. Eric Liederman, MDSacramento, CA 958231144308719
  29. Anna Liess, MDMountain View, CA 940401467596858
  30. Hsiao Lieu, MDSan Francisco, CA 941101669416566
  31. Kiet Lieu, MDBaldwin Park, CA 917061750440400
  32. Elliot Liff, M.D.Mill Valley, CA 949411427310457
  33. Robert Lifson, M.D.Los Angeles, CA 900191922194752
  34. Jane Lightfoot, MDCovina, CA 917231932286457
  35. Jean Lighthall, M.D.Mountain View, CA 940401316128531
  36. Angela Lii, MDAlhambra, CA 918011326127374
  37. Harley Liker, MDBeverly Hills, CA 902101619996980
  38. Olga Likhacheva, MDMartinez, CA 945531053499129
  39. Georgia LillLos Angeles, CA 900951659907624
  40. Jessica Lilley, MDSan Diego, CA 921341184379505
  41. Christopher Lillis, MDRoseville, CA 956611699773127
  42. Alex Lim, MD MPHAnaheim, CA 928011508430968
  43. Andrea Lim, MDWalnut Creek, CA 945961235217308
  44. Anthony Lim, MDLoma Linda, CA 923501316680614
  45. Brian Lim, M.D.Sacramento, CA 958171063455210
  46. Charles Lim, M.D.Lancaster, CA 935341205947231
  47. Conyee Lim, M.D.C.M.San Diego, CA 921201801004791
  48. Daniel Lim, MDBellflower, CA 907061215004239
  49. David Lim, MDRiverside, CA 925051982763645
  50. Dwight Lim, MDSan Jose, CA 951161124084561

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.