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 183 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. Cynthia Lin, MDSan Francisco, CA 941331528295284
  2. Dang Lin, M.D.Mountain View, CA 940401073927125
  3. David Lin, DORosemead, CA 917701679635353
  4. Grace Lin, MDSan Francisco, CA 941431942315387
  5. Haichi Lin, M.DApple Valley, CA 923071891739694
  6. Hanming Lin, MDSacramento, CA 958171609886464
  7. Harold Lin, M.D.Los Alamitos, CA 907201467472472
  8. Henry Lin, M.D.Los Angeles, CA 900271811227523
  9. Howard Lin, MDSanta Clara, CA 950511538248679
  10. Ian Lin, MDSan Mateo, CA 944011245306836
  11. James Lin, M.D.Arcadia, CA 910061881789600
  12. James Lin, M.D.San Diego, CA 921281295847267
  13. James Lin, MDSan Francisco, CA 941581578806295
  14. Janette Lin, MDSan Jose, CA 951161780851683
  15. Jay Lin, M.D.Canoga Park, CA 913031275551251
  16. Jennifer Lin, M.D.Beverly Hills, CA 902111285950238
  17. Jennifer Lin, MDSan Francisco, CA 941151134200306
  18. Jennifer Lin, MDSan Mateo, CA 944031336342708
  19. Jiin Lin, M.D.Fremont, CA 945391306813183
  20. Jim Lin, MDSanta Rosa, CA 954051760935845
  21. Jimmy Lin, M.D.San Jose, CA 951281952328585
  22. Joanna Lin, MDSan Jose, CA 951281043276496
  23. John Lin, M.D.South El Monte, CA 917331689602609
  24. Kaity Lin, M.D.Sacramento, CA 958171285771477
  25. Katherine Lin, D.O.Fontana, CA 923351427208651
  26. Kenneth Lin, MDSan Carlos, CA 940701972546976
  27. Luke Lin, MDAlameda, CA 945011740622679
  28. Mark Lin, MDBakersfield, CA 933091528050754
  29. Martin Lin, M.D.Sylmar, CA 913421376671768
  30. Melanie Lin, MDFountain Valley, CA 927081780857235
  31. Nancy Lin, M.D.Redlands, CA 923741528293826
  32. Naomi LinModesto, CA 953561205288636
  33. Raymond Lin, M.D.Rancho Mirage, CA 922701689842882
  34. Royce Lin, MDSan Francisco, CA 941101063524122
  35. Ryan Lin, MDRoseville, CA 956611992400733
  36. Spencer Lin, M.D.San Diego, CA 921031962668806
  37. Stephanie LinMartinez, CA 945531902262967
  38. Steve Lin, DOYorba Linda, CA 928861568783736
  39. Sunny Lin, M.D.Sylmar, CA 913421710011648
  40. Tai-Hon Lin, M.D.Torrance, CA 905031457449969
  41. Tammy Lin, MDRancho Santa Fe, CA 920671487689428
  42. Than Lin, D.OMonterey Park, CA 917551851524383
  43. Thomas Lin, M.D.Torrance, CA 905031861421349
  44. Tracy Lin, DOSan Dimas, CA 917731649851718
  45. Victor Lin, M.D.San Diego, CA 921031548614449
  46. Victor Lin, DOEl Centro, CA 922431134367204
  47. Victor Lin, MDFountain Valley, CA 927081871034033
  48. Vivian Lin, M.D.Beverly Hills, CA 902111699032821
  49. Xiang-Hong Lin, MDMonterey Park, CA 917541578520771
  50. Xiaomei Lin, MDLos Angeles, CA 900371295198810

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.