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 166 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. Allan Kurtz, D.O.Woodland Hills, CA 913671679656946
  2. Jason Kurtz, D.O.Placentia, CA 928701104128552
  3. Lyle Kurtz, M.D.Beverly Hills, CA 902111780615617
  4. Nisha KuruvadiChula Vista, CA 919111104322239
  5. Alan Kurz, M.D.Los Angeles, CA 900121841469285
  6. Marc Kurzbard, MDBellflower, CA 907061639246648
  7. Margot Kushel, MDSan Francisco, CA 941101194830521
  8. Neil Kushner, MDEureka, CA 955011902905458
  9. Vinita Kusupati, MDWest Hollywood, CA 900481336760313
  10. Wilson Kuswanto, M.D. PHDStanford, CA 943051265964423
  11. Marilyn Kutzscher, M.D.San Francisco, CA 941151326150384
  12. Milla Kviatkovsky, D.OSan Diego, CA 921031366855355
  13. Raymond Kwa, M.D.Mission Viejo, CA 926911609853092
  14. Nicholas Kwaan, MDSan Francisco, CA 941431952628828
  15. Robert Kwaan, MDLos Angeles, CA 900251306038070
  16. Hannah KwakBeverly Hills, CA 902101992150197
  17. Kevin Kwak, M.D.Los Angeles, CA 900891275759425
  18. Kevin KwakSan Diego, CA 921031033538632
  19. Brian Kwan, M.D.San Diego, CA 921611306001318
  20. Chuk Kwan, M.D.San Francisco, CA 941081336101500
  21. Damon Kwan, MDSan Francisco, CA 941151205052032
  22. Jeffrey Kwan, MDSan Diego, CA 921341063919447
  23. Judy Kwan, MDBellflower, CA 907061538211909
  24. Lawrence Kwan, MDStanford, CA 943051922062835
  25. Yvonne Kwan, MDCosta Mesa, CA 926261659378966
  26. Eric Kwok, M.D.San Francisco, CA 941181447231618
  27. Ester Kwok, MDLos Gatos, CA 950321790886034
  28. Hansen Kwok, M.D.Loma Linda, CA 923571992896286
  29. Michael Kwok, M.D.Diamond Bar, CA 917651881717197
  30. Michael Kwok, M.D.Novato, CA 949451124119235
  31. Monice Kwok, M.DSacramento, CA 958251407909682
  32. Ronald Kwok, M.D.El Cajon, CA 920211417062894
  33. Tsing-Tong Kwok, M.D.Fresno, CA 937201568559946
  34. Vincent Kwok, M.D.Long Beach, CA 908221174665376
  35. David KwonBeverly Hills, CA 902111780145524
  36. Eugene Kwon, MDHarbor City, CA 907101992853980
  37. Jeemin Kwon, MDLos Angeles, CA 900951093418865
  38. Melissa Kwon, M.D.San Francisco, CA 941091770970055
  39. Peter Kwon, M.D.Placentia, CA 928701003840471
  40. Steven Kwon, MDPanorama City, CA 914021932268679
  41. Sue Min Kwon, MDMoreno Valley, CA 925551174152631
  42. Tony Kwon, MDRiverside, CA 925061164404729
  43. Christopher Kwong, MDPalo Alto, CA 943011538343629
  44. Darren Kwong, D.O.Arcadia, CA 910071831465707
  45. Donna Kwong, M.D.Pleasanton, CA 945661760419386
  46. Elaine Kwong, M.D.Sacramento, CA 958161023382934
  47. Jan Kwong, MDSanta Clara, CA 950511861544090
  48. Nathan Kwong, MDFountain Valley, CA 927081437654340
  49. Pansy Kwong, MDOakland, CA 946111275611071
  50. Ruth Ann Kwong, M.D.San Francisco, CA 941331932581873

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.