NPPES file of Aug 9, 2026

Gastroenterology Physician in California

2,140 NPPES records list gastroenterology physician with a practice address in California, 5.5 per 100,000 residents, the 25th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 7 of 43.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RG0100X · 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, 195

  1. Los Angeles195
  2. San Diego125
  3. San Francisco103
  4. Sacramento90
  5. Stanford70

Gastroenterology Physician records in California

  1. Kathan Chintamaneni, MDMission Hills, CA 913451336680644
  2. Jaya Krishna Chintanaboina, MDFresno, CA 937201144478454
  3. Ron Chitayat, MDWest Hills, CA 913071912008657
  4. Laura Chiu, MD, MPHSan Francisco, CA 941431083076350
  5. Ming-Shing Chiu, MDRedwood City, CA 940631154409712
  6. Terence Chiu, MDDowney, CA 902421427083229
  7. Wai Kan Chiu, M.D., PH.D.Cameron Park, CA 956821801258686
  8. Daniel Cho, M.D.Torrance, CA 905051346433828
  9. David Choi, D.O.Irvine, CA 926181922490044
  10. Eric Choi, M.D.Riverside, CA 925061841406568
  11. Gina Choi, M.D.Los Angeles, CA 900951184883738
  12. Lillian Choi, MDMerced, CA 953401790769818
  13. Mario Chojkier, M.D.San Diego, CA 921611275548646
  14. Christina Chou, MDSan Francisco, CA 941091164749628
  15. You-Jen Chou, MDIrvine, CA 926181104070887
  16. Abhishek Choudhary, MDMountain View, CA 940401730276122
  17. Jayanta Choudhury, MDFresno, CA 937201851312268
  18. Ken Chow, M.D.Yuba City, CA 959911699781203
  19. Eugene Christian, EUGENE CHRISTIANInglewood, CA 903011326266537
  20. Eric ChuLong Beach, CA 908061790879351
  21. Michael Chu, M.D.Arcadia, CA 910071952491805
  22. Susan Chu, M.D.San Diego, CA 921231033127162
  23. Justin Chuang, M.D.San Jose, CA 951191205368537
  24. David Chui, MDSan Jose, CA 951281942373998
  25. Francis Chui, MDRedwood City, CA 940631033297684
  26. Henry Chun, MDRedwood City, CA 940631952489502
  27. Richard Chun, M.D.Citrus Heights, CA 956101003818055
  28. Daniel Chung, MDWalnut Creek, CA 945961063590552
  29. David Chung, MDTorrance, CA 905051851362974
  30. Kwok Leung Chung, M.D.Monterey Park, CA 917541760490627
  31. Mary Elizabeth Clark, M.D.San Francisco, CA 941151225109770
  32. John Clarke, M.D.Palo Alto, CA 943041467539643
  33. Brian Cleary, MDPalm Springs, CA 922621972697829
  34. Rose Codini, M.D.Laguna Hills, CA 926531144215880
  35. Asha Cogdill, M.D.Sacramento, CA 958171437325289
  36. Arlan Cohen, M.D.Pasadena, CA 911061538453170
  37. David Cohen, MD PHDWest Hollywood, CA 900481881650133
  38. Hartley Cohen, M.D.Los Angeles, CA 900171104826213
  39. Jerome Cohen, M.D.Torrance, CA 905051922036474
  40. Leonard Cohen, M.D.Orinda, CA 945631134371768
  41. Phillip Cohen-Lyons, M.D.La Jolla, CA 920371548636343
  42. Susie Cohn, MDOakland, CA 946121205161130
  43. Jacob Colarian, MDFresno, CA 937201700958543
  44. Daniel Cole, MDLos Angeles, CA 900951073539185
  45. Matthew Cole, M.D., M.P.H.Cameron Park, CA 956821851450522
  46. Martin Collen, M.D.Wildomar, CA 925951578659249
  47. Bradley Collins, PA-CRedlands, CA 923731881791986
  48. Kelsey Collins, MDTorrance, CA 905031912434382
  49. William Collins, MDOrange, CA 928681104892074
  50. Ashwinee Condon, MDLos Angeles, CA 900951831516749

Source: CMS NPPES, primary taxonomy 207RG0100X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 25 of 51 per resident

  1. Colorado5.7
  2. Hawaii5.6
  3. South Carolina5.6
  4. California5.5
  5. Michigan5.5
  6. Arizona5.4
  7. 50 states and D.C.6.2

Source: CMS NPPES, primary taxonomy 207RG0100X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.1% of these records appear in a Medicare file, against 84.4% 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. California83.1%
  2. United States84.4%

Gastroenterology Physician records in California, measured

  • In a Medicare file1,779 of 2,140 · 83.1% here, 84.4% nationally
  • In the CMS Doctors and Clinicians file1,538 · 71.9% here, 73.7% nationally
  • Not updated in five years or more1,280 · 59.8% here, 55.6% nationally
  • Median graduation year2002 · the 1,538 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RG0100X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,140 NPPES records list gastroenterology physician (207RG0100X) as their primary taxonomy with a practice address in California: 5.5 per 100,000 residents against 6.2 nationally (50 states and D.C.). Los Angeles has 195 of them (9%).

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 York1,797
  2. Florida1,513
  3. Texas1,478
  4. Pennsylvania1,049

States with a similar rate per 100,000

  1. Michigan5.5
  2. Arizona5.4
  3. Indiana5.4
  4. Vermont5.4

The largest states

  1. New York1,797
  2. Florida1,513
  3. Texas1,478
  4. Pennsylvania1,049
  5. Illinois887

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.