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 118 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. Kristen Haring, M.D.San Diego, CA 921081487749461
  2. Sarah HarirforooshOrange, CA 928681871120006
  3. Sony Haris, MDSan Jose, CA 951191750467288
  4. Elizabeth Harleman, MDSan Francisco, CA 941101396850723
  5. William Harless, M.D.San Diego, CA 921011366452823
  6. Stephanie Harman, M.D.Stanford, CA 943051528112190
  7. Brooke Harmssen, D.O.Glendale, CA 912061083110456
  8. Abraham Harn, DOAnaheim, CA 928011003337122
  9. Sabrina Harper, MDLong Beach, CA 908061023081924
  10. Richard Harr, MDRoseville, CA 956611184702839
  11. James Harrell, M.D.San Diego, CA 921031790700748
  12. William Harrell, MDLos Alamitos, CA 907201083673685
  13. Annie Harrington, M.D.Anaheim, CA 928061275719742
  14. Michael Harrington, MDNapa, CA 945581124186945
  15. Christina Harris, MDLos Angeles, CA 900481073553962
  16. Clara Harris, DOCitrus Heights, CA 956211720520943
  17. Elise Harris, MDSacramento, CA 958171174903918
  18. Emily Harris, MDSan Francisco, CA 941431205396454
  19. Ethan Harris, MDStanford, CA 943051902594567
  20. Jeffrey Harris, MDLos Angeles, CA 900151326038647
  21. Jeffrey Harris, MDSan Rafael, CA 949031134203136
  22. Justin Harris, M.D.Irvine, CA 926181063617934
  23. Nancy Harris, MDMoss Beach, CA 940381144643420
  24. Daniel Harrison, M.DEscondido, CA 920251629098884
  25. Jon Harrison, MDSan Diego, CA 921201912046616
  26. Julia Harrison, MDRoseville, CA 956611588742258
  27. Shawn Harrity, M.DSan Diego, CA 921031225053911
  28. Charles Harrod, M.D.Sacramento, CA 958281669471868
  29. John Hart, MDSaint Helena, CA 945741104904945
  30. Kevin Hart, M.D.Pleasanton, CA 945661285783746
  31. Anna Harte, M.D.Berkeley, CA 947201821033309
  32. Joan Harter, MDOroville, CA 959661114971322
  33. Perla Hartman, DOHarbor City, CA 907101144378118
  34. Roger Hartman, MDHarbor City, CA 907101083781942
  35. Robert Hartmann, MDJackson, CA 956421922019017
  36. Beth Hartung, M.D.Napa, CA 945581275501488
  37. Elsa Hartwick, M.D.Los Angeles, CA 900151558375022
  38. Emil Harty, MDLoma Linda, CA 923541326669094
  39. Nika Harutyunyan, MDLos Angeles, CA 900951932630621
  40. Thanit Hasadsri, M.D.Visalia, CA 932911346334687
  41. Husni Hasan, MDVallejo, CA 945891083838684
  42. Mariam Hasan, M.DOakland, CA 946021851604847
  43. Mufadda Hasan, M.D.Colton, CA 923241265703847
  44. Nazmul HasanIrvine, CA 928681265068514
  45. Rashedul Hasan, MDVictorville, CA 923951376169730
  46. Syed Hasan, M.D.Northridge, CA 913251649377318
  47. Thomas Hascall, MDLos Angeles, CA 900361245315324
  48. Olen Haseman, MDLoma Linda, CA 923541952091381
  49. Benjamin Hashem, MDWoodland Hills, CA 913671184668154
  50. Hani Hashem, MDCovina, CA 917221033179379

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.