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 115 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. Ammer Haffar, MDSan Diego, CA 921131942760822
  2. Mowbray Hagan, MDCorona, CA 928821235145590
  3. Robert Hagar, M.D.Oakland, CA 946091760549182
  4. Christopher Hage, M.D.West Hills, CA 913071043397482
  5. Kelley Hagerich, M.D., MPHSan Diego, CA 921611013109792
  6. Colin Haggerty, MDLa Jolla, CA 920371962595975
  7. Dennis Haghighat, M.D.Mission Viejo, CA 926911568449171
  8. Kamran Haghighat, MDAnaheim, CA 928041205826583
  9. Maryam Haghnegahdar, MDLa Habra, CA 906311992278949
  10. Jeffrey Hagino, DOElk Grove, CA 957581255918587
  11. James Hahn, M.D.Los Angeles, CA 900171033293634
  12. Janet Hahn, MDWalnut Creek, CA 945961841362654
  13. Jennifer Hahr, M.D.Sylmar, CA 913421376957795
  14. Umme Farwa Haideri, DOMurrieta, CA 925631811749914
  15. Sawyer Haig, D.O.Santa Barbara, CA 931051629333919
  16. Bethlehem Haile, M.DVacaville, CA 956871063605103
  17. Dawit Haile, MDModesto, CA 953551124642889
  18. Caldon Haj, MDSan Diego, CA 921171548523657
  19. Alaa Hajal, M.DSan Bernardino, CA 924041669829032
  20. Semina Hajra, M.DPleasanton, CA 945881316124399
  21. Zouhair Hakak, MDSan Dimas, CA 917731700876323
  22. Asaad Hakim, M.D.Garden Grove, CA 928431477504082
  23. Miriam HakimSan Diego, CA 921031366993503
  24. Ihsan Hakimeh, MDGlendora, CA 917401407805153
  25. Manuel Hakimi, MDTorrance, CA 905051063873891
  26. Shahbaz Hakimian, MDLos Angeles, CA 900271578630331
  27. Mehdi Hakimipour, MDFresno, CA 937111194987297
  28. Umme-Aiman Halai, M.D.Los Angeles, CA 900951093079774
  29. Gerard Halaska, MDBakersfield, CA 933011245399856
  30. Anthony Halat, M.D.San Andreas, CA 952491609975655
  31. F. Halcomb, M.D.Camarillo, CA 930121831542257
  32. Adam Haley, DOSan Diego, CA 921341235714619
  33. Andrew Hall, M.D.Carlsbad, CA 920081154494565
  34. Bernard Hall, M.D.Anaheim, CA 928071912078411
  35. Bruce Hall, M.D.Visalia, CA 932911720085251
  36. Christopher Hall, M.D.Oakland, CA 946091295754729
  37. Craig Hall, MDJackson, CA 956421013920628
  38. David Hall, D.O.Pomona, CA 917671679936538
  39. David Hall, MDSan Diego, CA 921301467614800
  40. John Hall, MDSan Francisco, CA 941251861423600
  41. Jonathan Hall, M.D.Union City, CA 945871154409902
  42. Joyce Hall, MDSan Diego, CA 921551710250345
  43. Susan Hall, M.D.Loma Linda, CA 923541972523876
  44. James Hallenbeck, MDPalo Alto, CA 943041316982358
  45. John Halloran, DOSacramento, CA 958161851888697
  46. Kathryn Hallsten, M.D.Portola Valley, CA 940281184750861
  47. Maggie Ham, M.D.Los Angeles, CA 900951356581862
  48. Ruth Hamad, M.D.Glendora, CA 917401619961703
  49. Souad Hamade, DOFresno, CA 937011548846082
  50. Sevag Hamamah, DOSan Diego, CA 921031972342061

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.