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 52 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. Alda Chavez, MDChula Vista, CA 919101922782002
  2. Bryce Chavez, MDBakersfield, CA 933011033747290
  3. Luis Chavez, MDSan Diego, CA 921141295224905
  4. Miguel Chavez, M.D.Orange, CA 928681649703125
  5. Sharisse Chavez, MDLos Angeles, CA 900341265503247
  6. Alejandra Chavez Carrera, MDOakland, CA 946021467915157
  7. Arti Chawla, M.D.Marina Del Rey, CA 902921548258064
  8. Manmohan Chawla, M.D.Artesia, CA 907011932375623
  9. Mundeep Chawla, M.D.Palo Alto, CA 943011063585560
  10. Shanta Chawla, MDIrvine, CA 926021871833111
  11. Shelly Chawla, MDLos Angeles, CA 900341447664636
  12. Ziad Chaya, D.O.Fountain Valley, CA 927081528420510
  13. Ki Che, M.D.Cerritos, CA 907031922139906
  14. Aye-Aye Cheah, MDTulare, CA 932741083683403
  15. Chew May Cheah, MDRichmond, CA 948011689108862
  16. Jenice Cheah, MDLos Angeles, CA 900951215407184
  17. Nicholas Chedid, MDSanta Clara, CA 950511871054015
  18. David Chee, MDPleasanton, CA 945881306846373
  19. Felicia Chee, M.D.Los Angeles, CA 900171942661053
  20. Peter Chee, MDLos Angeles, CA 900271659448488
  21. Chandan Cheema, MDYuba City, CA 959911053488114
  22. Sepideh Chegini, M.D.Downey, CA 902401871547075
  23. Marjan Chegounchi, MDInglewood, CA 903011285660456
  24. Roger Cheitlin, MDUkiah, CA 954821881643732
  25. Sweta Chekuri, MDOrange, CA 928681841584273
  26. Mandeep ChelaSacramento, CA 958171588291868
  27. Nisha Chellam Vedamuthu, M.D.West Hollywood, CA 900691689685927
  28. Mihaela Chelu, M.D.Downey, CA 902421457614174
  29. Alexander Chen, D.O.La Mirada, CA 906381114252608
  30. Alexander Chen, M.D.Woodland, CA 956951164537858
  31. Alice Chen, M.D.Los Angeles, CA 900951538317516
  32. Alice Chen, MD MPHSan Francisco, CA 941101902997596
  33. Allan Chen, MDLos Angeles, CA 900341003829326
  34. Andrew ChenFontana, CA 923371053873646
  35. Andy Chen, MDRosemead, CA 917701831153659
  36. Anna Chen, D.O.Mission Hills, CA 913451245475599
  37. Anne Chen, M.D.Vacaville, CA 956881003852708
  38. Anthony Chen, M.D.Hacienda Heights, CA 917451073527099
  39. Benjamin Chen, M.D.Oakland, CA 946061760744874
  40. Betty Chen, MDBaldwin Park, CA 917061811046220
  41. Bonnie Chen, MDOakland, CA 946111568605947
  42. Can Chen, M.D.Stanford, CA 943051942649157
  43. Caren Chen, MDAnaheim Hills, CA 928071538172044
  44. Charles Chen, M.D.Redlands, CA 923731124050463
  45. Chen Chen, D.O.Elk Grove, CA 957581831573823
  46. Chieh-Yu Chen, MDSan Francisco, CA 941031346604006
  47. Chienwei Chen, MDIrvine, CA 926041992795256
  48. Chih-Hsin Chen, M.D.Los Angeles, CA 900331346404977
  49. Chin-Lung Chen, M.D.Lucerne, CA 954581851302319
  50. Chung- Kwang Chen, MDBakersfield, CA 933011083610273

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.