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 141 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. Malcolm John, MDSan Francisco, CA 941431003872870
  2. Saji JohnFresno, CA 937201295856227
  3. Sanu John, DORiverside, CA 925011831777168
  4. Rachel Johns, DOWoodland Hills, CA 913671619037884
  5. Amanda Johnson, M.D.San Francisco, CA 941101629498381
  6. Avery Johnson, MDTwentynine Palms, CA 922781780277194
  7. Benjamin Johnson, M.D.San Diego, CA 921031396993291
  8. Cage JohnsonLos Angeles, CA 900331609913417
  9. Christopher Johnson, MDOakland, CA 946111730268434
  10. Curtis Johnson, M.D.Emeryville, CA 946081336118421
  11. Diane Johnson, M.D.Long Beach, CA 908021013962273
  12. Eric Johnson, M.D.San Diego, CA 921081346334935
  13. Eric Johnson, M.D.Mather, CA 956551740716216
  14. Henry JohnsonLong Beach, CA 908021760727614
  15. John Johnson, MDRedondo Beach, CA 902771194786764
  16. Joseph Johnson, MDLodi, CA 952401194906107
  17. Kelli JohnsonSanta Clara, CA 950511790909679
  18. Lloyd Johnson, M.D., PH.D.Los Angeles, CA 900221205913753
  19. Lois Johnson, MDSanta Rosa, CA 954041326150053
  20. Mark Johnson, MDSacramento, CA 958231841378593
  21. Matthew Johnson, MDFairfield, CA 945331659487395
  22. Meshell Johnson, M.D.San Francisco, CA 941431093755761
  23. Natalia Johnson, NATALIA JOHNSON M.DMountain View, CA 940401841594355
  24. Oluwatumininu Johnson, MDSanta Paula, CA 930601881882256
  25. Paul Johnson, MDRohnert Park, CA 949281881778876
  26. Ralph Johnson, M.D.San Diego, CA 921541669673505
  27. Royce Johnson, MDBakersfield, CA 933061336174655
  28. Steven Johnson, MDMartinez, CA 945531861571531
  29. Tyrone Johnson, MDSan Francisco, CA 941431770110900
  30. Veassa Johnson, M.DHarbor City, CA 907101346308756
  31. William Johnson, MDOakland, CA 946111285823427
  32. Andrew Johnston, MDCarmel, CA 939231710931019
  33. Brandon Johnston, MDColton, CA 923241619555885
  34. Jan Johnston, MDSolana Beach, CA 920751477689404
  35. Laurie Johnston, M.D.San Diego, CA 921231457360240
  36. Rebecca Johnston, MDSan Diego, CA 921031497404305
  37. Seema Johnston, M.D.Redondo Beach, CA 902771215378245
  38. Suzanne Johnston, D.OPoway, CA 920641780787762
  39. Nidhi Johri, M.DCastro Valley, CA 945461285811489
  40. Karl Johsens, M.D.Santa Cruz, CA 950651295948727
  41. Christina Jones, MDAnaheim, CA 928011215190541
  42. Cynthia Jones, M.D.Porterville, CA 932571336334945
  43. Daniel Jones, M.D.La Jolla, CA 920371376718890
  44. David Jones, M.D.Palo Alto, CA 943031417928631
  45. Derek Jones, M.D.La Jolla, CA 920371528202272
  46. Elaine Jones, MDManhattan Beach, CA 902661700862729
  47. Helen Jones, MDFresno, CA 937201164418372
  48. Henry JonesSan Francisco, CA 941211679680177
  49. Jennifer Jones, M.D., PH.D.South San Francisco, CA 940801447484506
  50. John Jones, MDOakland, CA 946091639139967

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.