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 159 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. Jan King, M.D., M.P.H.Los Angeles, CA 900591003086828
  2. Kip King, M.D.San Francisco, CA 941151598860637
  3. Liam King, MDSan Francisco, CA 941431285374462
  4. Phillip King, MDSalinas, CA 939011710961552
  5. Quynh Van King, MDTorrance, CA 905031114075090
  6. Richard King, MDMonterey, CA 939401144390048
  7. Rory King, DOFairfield, CA 945351376162347
  8. Tiffany King, D.O.Walnut Creek, CA 945951023386174
  9. William King, MD, JDLos Angeles, CA 900081427079250
  10. William King, MDManteca, CA 953371427136324
  11. Arthur Kingsbury, M.D.San Diego, CA 921031144216284
  12. James Kingsley, MDMenifee, CA 925861841687142
  13. Michael Kinnison, M.D.Yuba City, CA 959931861580599
  14. Laura Kinsel, MDMountain View, CA 940401518142926
  15. Joshua Kiok, MDPanorama City, CA 914021275692808
  16. Jennifer Kious, MDSanta Monica, CA 904041609070242
  17. David Kipper, M.D.Beverly Hills, CA 902121548290398
  18. Stuart Kipper, M.D.Vista, CA 920811114956570
  19. Thomas Kipps, M.D.La Jolla, CA 920931306861950
  20. Dobri Kiprov, MD., P.C.San Francisco, CA 941151174638555
  21. Aneeta Kiran, MDRedlands, CA 923731033377965
  22. Evangelia Kirimis, M.D.Los Angeles, CA 900951073755278
  23. Jason Kirk, M.D.West Hollywood, CA 900481497951065
  24. Jason Kirkman, MDFort Bragg, CA 954371487665410
  25. David Kirn, MDMill Valley, CA 949411821629296
  26. Henry Kirolos, M.D.Santa Monica, CA 904041215136098
  27. Michael Kirsch, MDSherman Oaks, CA 914031376602300
  28. Shailaja Kirti, MDRedwood City, CA 940631396819991
  29. Niroshan Kirupananthan, MDIrvine, CA 926181366883068
  30. Kameron KishabaTemecula, CA 925921326738105
  31. Lauren Kissinger, MDSacramento, CA 958231689746422
  32. Mira Kistler, MDLos Angeles, CA 900951417187147
  33. Tina Kitajima, M.D.Long Beach, CA 908061033164892
  34. Nancy Kitson, MDNipomo, CA 934441174543664
  35. Adam Klang, MDBakersfield, CA 933081386732246
  36. Kristina Klara, MDNorth Hills, CA 913431780204669
  37. Allan Klass, M DEncino, CA 914361346261039
  38. R Bryan Klassen, M.D.Monterey, CA 939401912281783
  39. Elliot Klaw, MDSan Luis Obispo, CA 934011568524130
  40. Carolyn Klebanoff, MDBerkeley, CA 947051093892846
  41. Yevgeny Klebanov, M.D.Walnut Creek, CA 945981841555976
  42. Bernard Klein, M.D.Thousand Oaks, CA 913601831382738
  43. Jennifer Klein, M.D.Hayward, CA 945451861566184
  44. Katelyn KleinGardena, CA 902471336600261
  45. Lindsay Klein, MDConcord, CA 945201962781658
  46. Oana Klein, MDLarkspur, CA 949391427240647
  47. Russell Klein, MDNewport Beach, CA 926631760480271
  48. Ryan Klein, MDNewport Beach, CA 926631184620866
  49. Scott Klein, MDSan Jose, CA 951161568546398
  50. Stuart Klein, MDPoway, CA 920641104834472

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.