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 5 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. Carlos Buitrago, MDRialto, CA 923771710481445
  2. Vadim BulRocklin, CA 957651629498274
  3. James Buxbaum, M.D.Los Angeles, CA 900331306088174
  4. Jamie Byun, MDModesto, CA 953551306341953
  5. Hector Caballero, MDWestlake Village, CA 913611174515662
  6. Cathleen Cabansag, MDSan Francisco, CA 941151275704744
  7. Cecilio Cabansag, M.D.Oxnard, CA 930301417144809
  8. Kathlynn Caguiat, M.D.Auburn, CA 956021366616310
  9. Cindy Cai, M.D., PH.D.Loma Linda, CA 923571386832871
  10. Ralph Camacho, MDPleasanton, CA 945581871640235
  11. Juan Canale, M.D.Turlock, CA 953801386679611
  12. John Canio, M.D.Roseville, CA 956611598804346
  13. Alyssa CaplanSan Carlos, CA 940701144781915
  14. Dayana Carcamo-Molina, MDSan Francisco, CA 941151417119827
  15. John Carethers, M.D.La Jolla, CA 920371518048990
  16. John Carlson, M.DSalinas, CA 939011164429965
  17. Steven Carlson, MDSan Luis Obispo, CA 934011740359215
  18. Martin Carr, M.D.Fullerton, CA 928351326034265
  19. Ethelred Carter, M.D.Los Angeles, CA 900331336247964
  20. Christine Cartwright, MDStanford, CA 943051306972567
  21. Thomas Caves, M.D.Santa Barbara, CA 931051144284522
  22. John Cello, MDSan Francisco, CA 941431346205168
  23. Nutan Chadha, M.D.Fremont, CA 945391215292859
  24. Krisna Chai, M.D.Santa Clara, CA 950511013007202
  25. Eric Chak, M.D.Davis, CA 956161225271331
  26. Indraneel Chakrabarty, M.D.Temecula, CA 925921356558621
  27. Milan Chakrabarty, M.D.Hemet, CA 925431700803798
  28. Dennis Chan, M. D.Monterey Park, CA 917541053343434
  29. Erick Chan, MDPalo Alto, CA 943011497817746
  30. Eugene Chan, MDWalnut Creek, CA 945961528146610
  31. Jennifer Chan, M.D.Los Angeles, CA 900341598912321
  32. Lawrence Chan, M.D.Fairfield, CA 945341356558332
  33. Mary Chan, MDMenlo Park, CA 940251790749430
  34. Simon Chan, M.D.Antioch, CA 945311497762082
  35. Suisun Chan, M.D.Monterey Park, CA 917541801815527
  36. Susanna Chan, M.D.Torrance, CA 905051497794283
  37. Yin Chan, MDLos Angeles, CA 900481528735065
  38. Sajiv Chandradas, M.D.San Diego, CA 921031720350465
  39. Prathibha Chandrasekaran, M.D.Redding, CA 960011114985819
  40. Albert Chang, MDRedlands, CA 923741790984805
  41. Andrew Chang, M.D.Loma Linda, CA 923541396702874
  42. Bianca ChangWest Hollywood, CA 900481396188363
  43. Elmer Chang, M.D.Mission Viejo, CA 926911912083353
  44. Jacqueline Chang, MDSacramento, CA 958171437785458
  45. John Chang, MDSan Diego, CA 921031265594527
  46. Jonathan Chang, M.D.Los Angeles, CA 900271285053298
  47. Karen Chang, DORialto, CA 923771861855439
  48. Kenneth J Chang, MDNewport Beach, CA 926631518047604
  49. Lin Chang, MDLos Angeles, CA 900951770518557
  50. Matthew Chang, M.D.Palo Alto, CA 943041598949521

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.