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 56 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. Philip Cheu, MDCosta Mesa, CA 926261568467215
  2. Alexander Cheung, M.DAnaheim, CA 928011912108754
  3. Brian Cheung, MDNewport Beach, CA 926601427546670
  4. David Cheung, MDLos Angeles, CA 900951104402973
  5. Derek Cheung, MDSan Marino, CA 911081336671981
  6. Edmund Cheung, MDHarbor City, CA 907101437207487
  7. Harry Cheung, MDSan Francisco, CA 941431013667856
  8. John Cheung, D.O.Lawndale, CA 902601215364559
  9. Kenneth Cheung, DOLoma Linda, CA 923541205332731
  10. Lauren Cheung, M.D.Stanford, CA 943051598070898
  11. Lisa CheungRed Bluff, CA 960801598804205
  12. Naomi Cheung, MDFountain Valley, CA 927081073503314
  13. Nga Yu Cheung, MDSignal Hill, CA 907551093072696
  14. Paul Cheung, M.D.Oakland, CA 946091942647060
  15. Raymond Cheung, M. D.Alhambra, CA 918011831247170
  16. Kelly Cheung-Warren, MDLos Angeles, CA 900951326788589
  17. Tia Cheunkarndee, MDStanford, CA 943051033817416
  18. Jennifer Chew, MDTorrance, CA 905051902133762
  19. Stanley Chew, MDSacramento, CA 958191104914613
  20. Whitney Chew, DOBurlingame, CA 940101356802953
  21. Kushal Chhabra, MDSan Ramon, CA 945831255332953
  22. Vikas Chhabra, M.D.Richmond, CA 948011114930427
  23. Preeti Chhabria, MDFremont, CA 945381639256589
  24. Ruchika Chhibar, M.D.Roseville, CA 956611083943732
  25. Andrew Chi, MD MPHLos Gatos, CA 950321700861275
  26. Jeffrey Chi, MDStanford, CA 943051508046350
  27. Leo Chi, M.D.San Leandro, CA 945771467530220
  28. Margaret Chi, MDLos Angeles, CA 900271285028423
  29. Tiffany ChiBurlingame, CA 940101609452382
  30. Wendy Chi, MDSanta Clara, CA 950511841377785
  31. Catherine Chia, M.D.Sacramento, CA 958171659697563
  32. Sam Chia, M.D.Arcadia, CA 910061346262631
  33. Aaron Chiang, M.D.Los Angeles, CA 900671184936379
  34. Kim Chiang, M.D.Stanford, CA 943051700145414
  35. Larry Chiang, MDEscandido, CA 920251912952524
  36. Melissa ChiangSan Francisco, CA 941431609339159
  37. Mu-Chien Chiang, D.O.San Marino, CA 911081831322148
  38. Nelson Chiang, M.D.Sacramento, CA 958171326021494
  39. Rachel Chiang, MDRiverside, CA 925051043368921
  40. Ryan Chiang, MDStanford, CA 943051891323986
  41. Jose Chibras Sainz, MDHealdsburg, CA 954481265622286
  42. Katherine Chick, M.DLarkspur, CA 949391386855567
  43. Anna Lourdes Chickey, M.D.Los Angeles, CA 900261609972207
  44. Preeta Chidambaran, M.D.Santa Clara, CA 950511669597241
  45. George Chidi, M.D.Corona, CA 928791396168944
  46. Henry Chien, M.D.Bakersfield, CA 933081922530864
  47. Jane Chien, MDLos Gatos, CA 950321588620785
  48. Jerry Chien, MDTracy, CA 953761154391241
  49. Jonathan Chien, M.D.Montebello, CA 906401558327270
  50. Ruby Chien, MDOrange, CA 928681417650227

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.