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 42 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. Morgan Wong, D.O.San Jose, CA 951161073900163
  2. Sunny Wong, MDAlhambra, CA 918011972669919
  3. John WoodSunnyvale, CA 940861326103045
  4. Graham Woolf, M.D.Los Angeles, CA 900481336282094
  5. Andrew Wright, MDLoma Linda, CA 923541457646119
  6. Danny Wu, MDOakland, CA 946121235197898
  7. Shang Wu, M.D.Hacienda Heights, CA 917451336228253
  8. Yi-Chia Wu, M.D.Covina, CA 917221174058341
  9. Chelsea XuPalo Alto, CA 943011841797149
  10. Lankai Xu, MDSacramento, CA 958171497217236
  11. Michael Yadegari, M.DVan Nuys, CA 914111023293016
  12. Rena Yadlapati, M.D.San Diego, CA 921031548597784
  13. Negar Yaghooti, M.D.Burlingame, CA 940101720475205
  14. Naohisa Yahagi, MDStanford, CA 943051629916887
  15. Kenneth Yamashiro, MDAnaheim, CA 928041669584934
  16. David Yamini, M.D.Santa Monica, CA 904041780849034
  17. Sohrab Yamini, M.D.Los Angeles, CA 900241689601858
  18. Arthur Yan, M.DSan Diego, CA 921231437354164
  19. James Yan, D.O.San Francisco, CA 941331588683890
  20. Stephanie Yan, MDOakland, CA 946111013379841
  21. Alexander Yang, M.D.San Diego, CA 921031427408921
  22. Alice Yang, M.D.San Jose, CA 951241669662896
  23. Edward Yang, M.D.San Diego, CA 921031437545654
  24. Eleanor Yang, M.D.Long Beach, CA 908221124569561
  25. Jenny Yang, MDSan Jose, CA 951161700021987
  26. Julie Yang, M.D.Pasadena, CA 911051376732057
  27. Vicky Yang, M.D.Redwood City, CA 940621710063334
  28. Beshoy Yanny, M.D.Orange, CA 928681417221243
  29. Francis Yao, MDSan Francisco, CA 941431134177470
  30. Kong Peng Yap, M.D.Irvine, CA 926041942235288
  31. Priyanka YaramadaUpland, CA 917861588008189
  32. Andres Yarur, M.D.Los Angeles, CA 900481558519256
  33. Sidney Yassinger, M.D.Carmichael, CA 956081073654612
  34. Hal Yee, MDSan Francisco, CA 941101275636771
  35. Philip Yee, M.D.San Ramon, CA 945831770666448
  36. Kelvin Yeh, M.D.Alhambra, CA 918011104063940
  37. Danny Yen, M.D.Auburn, CA 956021063498897
  38. Timothy Yen, M.D.Loma Linda, CA 923541871988907
  39. Tommy Yen, M.D.Santee, CA 920711053421958
  40. Aaron Yeoh, MDStanford, CA 943051043742331
  41. Benjamin Yip, MDSan Francisco, CA 941091962820605
  42. Dick Yip, MDAnaheim, CA 928041851374631
  43. Jason Yip, M.D.Anaheim, CA 928051487862066
  44. Eric Yoo, M.D.Santa Cruz, CA 950651184155913
  45. Sung Yoo, MDDiamond Bar, CA 917651437141587
  46. Eugene Yoon, M.D.Fullerton, CA 928351861618449
  47. Rody Yoshinaka, MDBaldwin Park, CA 917061033280946
  48. Harvey Young, M.D.Menlo Park, CA 940251093768483
  49. Fady Youssef, M.D.San Diego, CA 921031265887723
  50. Daniel Yu, MDWalnut Creek, CA 945961295813384

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.