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 41 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. Hank Wang, MDOakland, CA 946111376785048
  2. James Wang, MDRiverside, CA 925051558438762
  3. Jeremy WangLos Angeles, CA 900951679950794
  4. John WangSan Francisco, CA 941151518429869
  5. Rex Wang, MDAnaheim, CA 928071225109150
  6. Thomas Wang, MDLos Angeles, CA 900331427548338
  7. Victor Wang, MDPlacentia, CA 928701649204397
  8. Ying Wang, MDWalnut Creek, CA 945961952836587
  9. Peerapol Wangrattanapranee, MDRiverside, CA 925211326628652
  10. Rabindra Watson, M.D.West Hollywood, CA 900481720227028
  11. Harvey Watts, M.D.San Francisco, CA 941171184640872
  12. Robert Webman, M.DTorrance, CA 905031174565527
  13. Jeffrey Wei, MDVallejo, CA 945891023196508
  14. Mike Wei, MDStanford, CA 943051417311408
  15. Benjamin Weinberg, MDLaguna Hills, CA 926531598826612
  16. Kerry Weiner, M.D.Burbank, CA 915051528062437
  17. Alexa Weingarden, MD, PHDStanford, CA 943051205367794
  18. Zelman Weingarten, MDMontebello, CA 906401407921109
  19. David Weinman, M.D.San Diego, CA 921231417068800
  20. Steven Weinstock, M.D.Torrance, CA 905031477620177
  21. Fredric Weiss, M.D.Encino, CA 914361336354059
  22. Joseph Weiss, M.D.Rancho Santa Fe, CA 920911700979283
  23. Steven Weiss, MDDowney, CA 902421457569162
  24. Jed Weissberg, MDFremont, CA 945381326190836
  25. Robert Wen, MDRiverside, CA 925051790852507
  26. Gary Wernick, MDRedlands, CA 923741033189808
  27. Carl West, M.D.La Quinta, CA 922531326019944
  28. Paul Wetzel, M.D.San Luis Obispo, CA 934011366427221
  29. Suk Whang, M.D.Travis Afb, CA 945351619041316
  30. Steven White, M.D.San Francisco, CA 941581457606626
  31. Mary Whitlock Fithian, MDSan Diego, CA 921201972628485
  32. Gregory Wiener, M.DChula Vista, CA 919101811099534
  33. Cristina Wiese, MDThousand Oaks, CA 913611710921564
  34. Zealous Wiley, MDOakland, CA 941161740232610
  35. Robert Wilkes, MDSan Mateo, CA 944021184703217
  36. Jason Williams, MDSan Jose, CA 951281083894257
  37. Min Win, MDFresno, CA 937201316079619
  38. Peter Winkle, MDCypress, CA 906301992923460
  39. Trevor Winter, MDBakersfield, CA 933061912911686
  40. Marc Wishingrad, MDSanta Monica, CA 904041093764359
  41. Erin Wolf, MDWalnut Creek, CA 945981245733062
  42. Phillip Wolfe, M.D.Pleasanton, CA 945881710075411
  43. James Wolosin, M.D.San Diego, CA 921231265536601
  44. Carrie Wong, M.D.Los Angeles, CA 900241801214440
  45. Carrie Wong, M.D.San Diego, CA 921541366604365
  46. David Wong, M.D.San Ramon, CA 945831386654200
  47. Edward Wong, M.D.Lancaster, CA 935341679559157
  48. Helen Wong, M.D.Fresno, CA 937011790704245
  49. Katherine WongBurlingame, CA 940101417367467
  50. Kimberly Wong, M.D.Sacramento, CA 958171528486479

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.