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 59 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. Lauren Choi, M.D.Martinez, CA 945531700271210
  2. Lei Choi, M.D.San Francisco, CA 941181811067911
  3. Michael Choi, M.D.Monterey Park, CA 917551255405635
  4. Ryan Choi, DOSan Diego, CA 921341548915119
  5. Sang-Hee Choi, MDLos Angeles, CA 900341134277957
  6. Sara Choi, DOFullerton, CA 928351346876349
  7. Shelley ChoiLos Angeles, CA 900951154748358
  8. Young Choi, D.O.San Leandro, CA 945771871671628
  9. Reihaneh Chokhachi Zadeh Moghadam, MDLoma Linda, CA 923501629681358
  10. Seema Chokshi, M.D.Redwood City, CA 940631588893598
  11. Linda Chon, M.D.Los Angeles, CA 900271982022729
  12. Jeffrey Chong, M.D.Van Nuys, CA 914051376644542
  13. Kim Chong, M.D.Downey, CA 902421316124431
  14. Maribeth Chong, M.DCarlsbad, CA 920081932134756
  15. Ming Chong, MDPasadena, CA 911051356395073
  16. Peter Chong, MDGardena, CA 902491346276789
  17. Soo Chong, M.D.Los Angeles, CA 900171932206836
  18. Steven Chong, M.DMurrieta, CA 925631033223946
  19. Yoo Jin Chong, M.DCarlsbad, CA 920081831124650
  20. Christopher Choo, MDGreenbrae, CA 949041063946267
  21. Ivy Choo, M.D.San Diego, CA 921791528143096
  22. Lesley Chooi, MDBellflower, CA 907061972670859
  23. Steven Chooljian, M.D.Fresno, CA 937201245250232
  24. Deepak Chopra, M.D.Carlsbad, CA 920091821223835
  25. Harneet Chopra, MDBerkeley, CA 947041457581597
  26. Nakul Chopra, MD, MPH, MBAThousand Oaks, CA 913601346828274
  27. Calvin Chou, MD,PHDSan Francisco, CA 941211669407565
  28. Ching Chou, MD.Carmichael, CA 956081588866800
  29. Debby Chou, MDAnaheim, CA 928071982771903
  30. Emily Chou, MDSan Diego, CA 921201649328600
  31. Helen Chou, MDSan Diego, CA 921031922635341
  32. Huaming Chou, MDConcord, CA 945181902868672
  33. James Chou, MDPanorama City, CA 914021023177623
  34. Janet Chou, D.O.Alhambra, CA 918011821308529
  35. Jonathan Chou, MD, PHDSan Francisco, CA 941431245657311
  36. Joyce Chou, M.D.Cerritos, CA 907031497017503
  37. Mu Chou, MDNapa, CA 945581699727487
  38. Shenfon Chou, M.D.Orange, CA 928671437334356
  39. Chia Chou,, M.D.,Roseville, CA 956611972514933
  40. Justin Choudhari, MDChula Vista, CA 919151669976643
  41. Suvarna Choudhari, M.D.Templeton, CA 934651578855995
  42. Rajiv Choudhary, M.D., MPHRiverside, CA 925051619230323
  43. Mohammad Choudhery, DORoseville, CA 956611861020919
  44. Neeharika Choudhry, M.D.Sacramento, CA 958161366611907
  45. Sara Choudhry, M.D.Redding, CA 960011023225521
  46. Farhan Choudhury, DOEmeryville, CA 946081659011641
  47. Ranjita Choudhury, M.DFrench Camp, CA 952311336163617
  48. Joon Choung, MDLos Angeles, CA 900121487999264
  49. Albert Chow, MDLos Angeles, CA 900271093886913
  50. Brian Chow, MDTorrance, CA 905021972716223

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.