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 14 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. Kapil Gupta, MDWest Hollywood, CA 900481164646642
  2. Nikhil Gupta, M.D.Victorville, CA 923951982058152
  3. Samir Gupta, MDSan Diego, CA 921611023127057
  4. Saurabh Gupta, M.D.Berkeley, CA 947051457669228
  5. Jorge Gutierrez, M.D.Palm Springs, CA 922621215914221
  6. Paul Guzik, DOSan Luis Obispo, CA 934011558858183
  7. Edwin Gyorffy, MDSacramento, CA 958231336291558
  8. Thai Ha, MDTorrance, CA 905051174512172
  9. Aida Habtezion, M.D.Stanford, CA 943051902109796
  10. Thomas Haddad, M.D.San Francisco, CA 941091932151867
  11. Shida Haghighat, MDNorth Hollywood, CA 916021629519848
  12. Scott Hahm, M.D.Burbank, CA 915051881965838
  13. Katherine Hahn, MDBeverly Hills, CA 902111457697211
  14. William Hahn, M.D.Santa Barbara, CA 931051033227582
  15. Faizi Hai, MDSan Diego, CA 921031639523228
  16. Rabab Hajar, M.DSan Luis Obispo, CA 934051003103805
  17. Shahina Hakim, MDTorrance, CA 905051114957057
  18. Shahrad Hakimian, M.D.Beverly Hills, CA 902111245625326
  19. Akeel Halai, M.D.Redding, CA 960021437116449
  20. Nasir Halim, M.D.Fresno, CA 937011619387537
  21. Shant Hamamah, MDPanorama City, CA 914021235287285
  22. Mostafa Hamdy, MDBrawley, CA 922271780670836
  23. Christopher Hamerski, M.D.San Francisco, CA 941091205033420
  24. Muhammad Hammami, M.D.Rancho Cucamonga, CA 917301073801809
  25. Muhammad Hammami, MDFresno, CA 937011891149571
  26. Kenneth Hammerman, MDSan Francisco, CA 941091174600365
  27. Taha Hamoui, MDLancaster, CA 935341265521520
  28. Alexander Han, MDFontana, CA 923351790967743
  29. Nancy Han, M.D.Fountain Valley, CA 927081609055300
  30. Steven-Huy Han, MDLos Angeles, CA 900241841218880
  31. Brian Hanson, M.D.Ukiah, CA 954821902916323
  32. Tahmina Haq, M.D.Yorba Linda, CA 928861538332853
  33. Thomas Hargrave, MDOakland, CA 946121023076692
  34. Gregory Harmon, M.D.Harbor City, CA 907101346347028
  35. Thomas Harpole, MDFallbrook, CA 920281780664045
  36. Marc Harwitt, M.D.Santa Monica, CA 904041285613943
  37. Nazia Hasan, M.D., M.P.H.Fairfield, CA 945341831394667
  38. John Hata, M.D.Sacramento, CA 958231205800042
  39. David Hatoff, MDLaguna Hills, CA 926531619930567
  40. Brian Hauck, MDUkiah, CA 954821649384751
  41. Kevin Haynes, MDSan Diego, CA 921031467411447
  42. Sabine Hazan, MDVentura, CA 930031669418232
  43. Ronald Heilpern, MDRancho Mirage, CA 922701760468896
  44. Richard Hell, M.D.Monterey, CA 939401114937927
  45. Jerome Helman, MDSanta Monica, CA 904041093876831
  46. Yao Heng, MDSan Francisco, CA 941151225116825
  47. Cameron HennebergLos Angeles, CA 900951316408719
  48. Kenneth Hepps, MDTarzana, CA 913561154313880
  49. Jeremy Herman, MDLos Angeles, CA 900391710154968
  50. Joy-Marie Hermes, MDLa Jolla, CA 920371134789258

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.