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 16 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. Lizhou Huang, M.D.Fountain Valley, CA 927081396088977
  2. Richard Huang, MDVictorville, CA 923951124247861
  3. Robert Huang, M.D.Stanford, CA 943051528359593
  4. Brett Hughes, MDNewport Beach, CA 926601831630243
  5. Stanley Hui, M.D.San Mateo, CA 944031023196888
  6. Chuang Hung, M.D.Upland, CA 917861619049749
  7. Jessica Hung, M.D.Orange, CA 928681396786323
  8. Douglas Hunt, M.D.La Jolla, CA 920371851583058
  9. Gordon Hunt, M.D.San Diego, CA 921031063437101
  10. Timothy Hurley, MDSanta Rosa, CA 954031831273804
  11. Syeda Husain, MDAnaheim, CA 928071013088046
  12. Hisham Hussan, M.D.Sacramento, CA 958161801044789
  13. Caroline Hwang, M.D.Los Angeles, CA 900331003090085
  14. Elizabeth Hwang, M.D.Stanford, CA 943051679765838
  15. James Hwang, MDRidgecrest, CA 935551659803146
  16. Joo Hwang, MDStanford, CA 943051194815043
  17. Shakir Hyder, M.D.Fremont, CA 945381316024508
  18. Charles Hyman, MDStanford, CA 943051447749759
  19. Fernando Ibarra, MDMonterey Park, CA 917541013082726
  20. Waleed Ibrahim, M.D.Modesto, CA 953501407052244
  21. Gregory Idos, M.D.Duarte, CA 910101770769937
  22. Ifeanyi Igwegbe, M.D.Yuba City, CA 959911073620217
  23. Zaid Imam, MDFremont, CA 945381598286544
  24. Erick Imbertson, M.D.Loma Linda, CA 923541346541380
  25. Thomas Imperato, M.D.Sacramento, CA 958231902871684
  26. Joanne Imperial, MDPalo Alto, CA 943041225101884
  27. Andrew Ippoliti, M.D.Los Angeles, CA 900331881621308
  28. Rashid Iqbal, MDFairfield, CA 945331942285879
  29. Homayon Iraninezhad, DOSan Clemente, CA 926731740448414
  30. Danny Issa, MDWest Hills, CA 913071750631396
  31. Christian Jackson, M.D.Loma Linda, CA 923541639264864
  32. Lucien Jacobs, M.D.Tarzana, CA 913561639155658
  33. Steven Jacobsohn, M.D.San Francisco, CA 941151639104151
  34. Russell Jacoby, MDCameron Park, CA 956821700852878
  35. Shahnawaz Jaffer, M.D.Covina, CA 917231649301698
  36. Alexander Jahng, M.D.Orange, CA 928681295927390
  37. Avni Jain, MD, FRCPCOrange, CA 928681629837455
  38. Prahalad Jajodia, MDFresno, CA 937201114092186
  39. Farid Jalali, M.D.Laguna Hills, CA 926531710244462
  40. Hyder Jamal, MDYorba Linda, CA 928861740280932
  41. M. Mazen Jamal, M.D., M.P.H.Corona, CA 928811003916727
  42. Altaf Jan, M.D.Sacramento, CA 958161922072404
  43. Shahram Javaheri, M.D.Mission Viejo, CA 926911497861439
  44. Parviz Javdan, M.D.Los Angeles, CA 900241376640235
  45. Aruna Jayaraman, M.D., M.H.S.Santa Rosa, CA 954031306817903
  46. Michael Jean, MDNewhall, CA 913211033163985
  47. Mladen Jecmenica, M.D.Corona, CA 928811619102837
  48. Kevin Jenkins, DOUpland, CA 917861730276163
  49. Timothy Jenkins, MDFontana, CA 923351205903119
  50. Dennis Jensen, MDLos Angeles, CA 900951821017443

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.