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 116 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. Ronald Hamamura, MDBellflower, CA 907061538236443
  2. Aissatou Haman, MDSan Francisco, CA 941171841585700
  3. Benjamin Hambro, MDNovato, CA 949451205399052
  4. Jane HamersleySan Francisco, CA 941431104914233
  5. Linda Hamidjaja, MDFresno, CA 937011184952681
  6. Nida Hamiduzzaman, M.D.Los Angeles, CA 900331720271604
  7. Colleen Hamilton, MDTorrance, CA 905021083302939
  8. Ivan Hamilton, M.D.San Francisco, CA 941151669421202
  9. Maria Hamilton, MDLos Angeles, CA 900271972704856
  10. Maurice Hamilton, MDStockton, CA 952101417035254
  11. Rhonda Hamilton, M.D.Palo Alto, CA 943041225063241
  12. Ricardo Hamilton, M.DHarbor City, CA 907101912131558
  13. Shawn Hamilton, MDIrvine, CA 926041134270069
  14. Lilly Hammack, DO, RDNGilroy, CA 950201972932523
  15. Mohamed Hammami, MDBakersfield, CA 933061285049726
  16. Sumaya Hammami, MDFresno, CA 937011033649843
  17. Steven Hamman, M.D.Los Altos, CA 940241306289004
  18. Don Hammi, MDSan Diego, CA 921201235287269
  19. Christopher Hammond, DOEl Segundo, CA 902451316107675
  20. Charles Hamori, MDSan Diego, CA 921201659429611
  21. Kusuma Hampapur, M.D.Pleasanton, CA 945881346306008
  22. Brian Hamway, MDSan Francisco, CA 941171437372273
  23. Katherine HanLa Jolla, CA 920371740845304
  24. Kenneth Han, D.O.Anaheim, CA 928011811960982
  25. Kyung Han, M.D.Los Angeles, CA 900061699868224
  26. Liwen Han, MDRiverside, CA 925031205030459
  27. Maria Han, M.D.Los Angeles, CA 900951114248358
  28. Myat Han, MDBakersfield, CA 933011821165630
  29. Paul Han, MDBaldwin Park, CA 917061982756359
  30. Paul Han, M.D.San Diego, CA 921031053553339
  31. Richard Han, M.D.Buena Park, CA 906211821061466
  32. Semi Han, MDSan Francisco, CA 941141023554631
  33. Shelley Han, M.D.Costa Mesa, CA 926261114345683
  34. Sherry Han, MDTracy, CA 953771558433391
  35. Stacy HanSan Francisco, CA 941101225665938
  36. Thin Han, M.D.Bakersfield, CA 933091356319826
  37. Young Han, MDLancaster, CA 935341740691294
  38. Anas Hana, MDSan Francisco, CA 941151811076557
  39. Raafat Hana, M.DPorterville, CA 932571568539997
  40. Nicola Hanchock, M.D.Berkeley, CA 947051518074830
  41. Richa Handa, MDUnion City, CA 945871871976878
  42. Neil Handelman, MDHayward, CA 945451528146396
  43. Joel Handler, MDAnaheim, CA 928071417028325
  44. Jonathan Hanisch, MDStanford, CA 943051952987398
  45. Courtney HanlonLos Angeles, CA 900331245790567
  46. Caroline Hanna, MDOrange, CA 928681295312023
  47. Christine Hanna, M.D.La Canada, CA 910111316325889
  48. Harlington Hanna, MDSan Francisco, CA 941021861977324
  49. Helen Hanna, M.D.Whittier, CA 906021174054639
  50. Ibrahim Hanna, M.D.Glendora, CA 917411407898653

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.