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 171 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. Bryan Lau, MDTorrance, CA 905051164806931
  2. Chai-Kiong Lau, M.D.Fremont, CA 945391912957309
  3. Chu Kwan Lau, MDWoodland, CA 956951164438933
  4. Gene Lau, MDSan Francisco, CA 941151427136076
  5. Hoi Ying Lau, DOOakland, CA 946021659675015
  6. Karrie Lau, D.O.Porterville, CA 932571508397936
  7. Megan Lau, MDStanford, CA 943051134705668
  8. Stephen LauSan Leandro, CA 945771467758201
  9. Susie Lau, M.D.Los Angeles, CA 900331336193614
  10. Tak Lau, MDLong Beach, CA 908151497251060
  11. Tsang Lau, M.D.Orange, CA 928681700100732
  12. Ying Ting LauDowney, CA 902421558780544
  13. Justin Laube, M.D.Santa Monica, CA 904041497044341
  14. Martin Lauber, MDFresno, CA 937031922028901
  15. John Lauridsen, M.D.Anaheim, CA 928071730114166
  16. Mark Lauron, M.D.Apple Valley, CA 923071932179595
  17. Victor Laus, M.D.Riverside, CA 925011881724144
  18. Robert Lavaysse, MDNovato, CA 949451093899072
  19. Jamie Lavender, M.D.San Diego, CA 921011811255276
  20. Sarah Lavery, MDRiverside, CA 925061417990383
  21. Dariush Lavi, M.D.Costa Mesa, CA 926261750449062
  22. Joseph Lavi, M.D.Valencia, CA 913551912082017
  23. Cyrus Lavian, M.D.Panorama City, CA 914021548283526
  24. Arye Lavin, MDCalabasas, CA 913021730766239
  25. Marc Lavin, M.D.West Hills, CA 913071326048638
  26. Jenna LavinaSan Diego, CA 921031205011368
  27. Katya Lavine, MDLos Angeles, CA 900951730881905
  28. Alison Lavoy, M.D.Mill Valley, CA 949411407871197
  29. David Law, MDLong Beach, CA 908061336306166
  30. Emily LawSan Francisco, CA 941071962882811
  31. Jade Law, MDSylmar, CA 913421952898884
  32. Lisa Law, M.D.San Francisco, CA 941081518030543
  33. Malena Law, MDLos Angeles, CA 900951497768725
  34. Grant Lawless, M.D.Thousand Oaks, CA 913201871854695
  35. David Lawrence, MDLos Angeles, CA 900121114345550
  36. Jody Lawrence, MDSan Francisco, CA 941101518074319
  37. Nicole Lawrence, M.D.Torrance, CA 905051508181157
  38. Pamela Lawrence, M.D.Irvine, CA 926121336299734
  39. Thoby Lawrence, MDSan Francisco, CA 941151063590685
  40. Ami Laws, M.D.Palo Alto, CA 943041457355794
  41. Catherine Lawson, M.D.Oceanside, CA 920561649279043
  42. Fehmida Murtuza LaxmidharSan Francisco, CA 941431679216873
  43. Divya Laxmikant, M.DOakland, CA 946111295886075
  44. Archana Laxmisan, MD MASan Diego, CA 921231689841686
  45. Grace Lay, DOSouth San Francisco, CA 940801629156211
  46. Linda Lay, D.O.Oroville, CA 959661164717815
  47. Lorena Layrisse Landaeta, M.D.Rolling Hills Estates, CA 902741538589965
  48. Jerome Lazaga, M.D.Bakersfield, CA 933061639417181
  49. Lyn Lazar, M.D.Livermore, CA 945501427072396
  50. Joyce Lazarus, M.D.Norco, CA 928601831143056

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.