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 169 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. Calvin Lam, MDWest Hollywood, CA 900481225725336
  2. Chi Lam, MDMonterey Park, CA 917541205843778
  3. Christine Lam, MDPlaya Vista, CA 900941205111366
  4. David Lam, D.O.Los Angeles, CA 900331174996342
  5. Eddie Lam, M.D.Alhambra, CA 918011518969971
  6. Elene LamSanta Clara, CA 950511215162086
  7. Francis LamSacramento, CA 958171952677445
  8. Gregory Lam, M.D.Laguna Hills, CA 926531871955922
  9. Harry Lam, MDLos Angeles, CA 900331043455363
  10. Henry Lam, M.D.Merced, CA 953481407814155
  11. Jennifer Lam, MDHarbor City, CA 907101013065929
  12. Jeremy Lam, M.D.Tustin, CA 927801083140172
  13. Jovian Lam, MDSan Diego, CA 921031487143749
  14. Julie Lam, M.D.Sylmar, CA 913421144494659
  15. Linda Lam, MDHuntington Beach, CA 926461508145863
  16. Linda Lam, M.D.Fullerton, CA 928351639180086
  17. Loi Lam, M.D.Vallejo, CA 945891861692964
  18. Michael Lam, M.D.Corona, CA 928791033122601
  19. Osama Lam, M.D.San Jose, CA 951161154432045
  20. Pamela Lam, D.O.La Jolla, CA 920371235540964
  21. Phuong-Quang Lam, MDSan Francisco, CA 941151871096669
  22. Raymond Lam, MDPanorama City, CA 914021629126503
  23. Raymond Lam, M.D.San Francisco, CA 941101023465879
  24. Richard Lam, MDSun City, CA 925861003830191
  25. Steven Lam, MDSan Francisco, CA 941151336768415
  26. Trang Lam, MDVictorville, CA 923951891718565
  27. Troy Lam, MDMountain View, CA 940401033293337
  28. Michele Lamantia, MDSan Ysidro, CA 921731124176102
  29. Cindy Lamar, MDMenlo Park, CA 940251588787907
  30. Carol Lamb, M.D.Danville, CA 945061689787962
  31. Carolyn Lamb, M.D.,South Pasadena, CA 910301841374642
  32. Marie Claire Lamb, M.D.Santa Barbara, CA 931051245693639
  33. Simarjeet Lamba, MBBSFresno, CA 937201033747324
  34. Christian Lami, M.D.Santa Paula, CA 930601598144974
  35. Angela Lamotte, M.D.Long Beach, CA 908061538166764
  36. Yashna Lamsal, DOFairfield, CA 945341477257699
  37. Norry Lan, M.D.French Camp, CA 952311033141759
  38. Maya Land, MDSanta Rosa, CA 954031619958154
  39. William Land, M.D.La Jolla, CA 920371730169871
  40. Charles Landefeld, M.D.San Francisco, CA 941431962440941
  41. John Landefeld, MDSacramento, CA 958201366896441
  42. Richard Lander, M.D.Calabasas, CA 913021639242241
  43. Jerad Landeros, MDSan Francisco, CA 941141235792789
  44. Richard Landers, MDPorter Ranch, CA 913261679689921
  45. Kenneth Landis, M.D.Hawthorne, CA 902501861463077
  46. Robert Landman, M.D.Yorba Linda, CA 928861326035874
  47. Ulf Lando, MDEncino, CA 914361487769063
  48. Bruce Landres, MDLos Angeles, CA 900251700844164
  49. Colleen Landry, M.D.Walnut Creek, CA 945981609080779
  50. Nicholas Landsman, M.D.Los Angeles, CA 900341700146339

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.