NPPES file of Aug 9, 2026

Gastroenterology Physician in Washington

533 NPPES records list gastroenterology physician with a practice address in Washington, 6.8 per 100,000 residents, the 12th highest rate of 51. Seattle and Tacoma have the most; each record links to the provider's NPI and the Washington license search. Page 7 of 11.

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).

Seattle has the most, 161

  1. Seattle161
  2. Tacoma44
  3. Spokane37
  4. Everett31
  5. Vancouver26

Gastroenterology Physician records in Washington

  1. Gautam Mankaney, MDSeattle, WA 981011053677310
  2. Ignatius Marsidi, MDEverett, WA 982031396792149
  3. Ronald Mason, MDKirkland, WA 980341124088430
  4. Marshall McCabe, MDOlympia, WA 985021831191162
  5. Marshall McCabe, D.O.Olympia, WA 985021447514302
  6. Patrick McCabe, MDSpokane, WA 992041659798650
  7. Susan McCormick, MDSeattle, WA 981011174611420
  8. Kelly McCullough, M.D.Bellingham, WA 982251841256260
  9. George McDonaldSeattle, WA 981091649356403
  10. John Meisel, MDBellevue, WA 980051093722787
  11. Kevin MeitzVancouver, WA 986641801916143
  12. Mark Mendez Vigo, MDColville, WA 991141760470702
  13. Klaus Mergener, M.D.Edmonds, WA 980261578537031
  14. Benjamin Merrifield, MDOlympia, WA 985061083695167
  15. Thammasak MingbunjerdsukLongview, WA 986321720439490
  16. Rajnish Mishra, MDSeattle, WA 981041538376777
  17. Kawthar Mohamed, MDTacoma, WA 984061225691207
  18. Venkatachala Mohan, MDBellevue, WA 980041194704106
  19. Carlos Moscoso, M.D., PH.D.Everett, WA 982011083148969
  20. Oussama Moussan, M.D.Tacoma, WA 984051467426171
  21. James Mu, MDEverett, WA 982031841231438
  22. Natasha Muckova, M.D.Bellingham, WA 982261790874048
  23. Brian Mulhall, MD, MPHTacoma, WA 984051720013832
  24. Michael MullarkeyVancouver, WA 986641295297950
  25. Gregory Munson, M.D.Bellingham, WA 982251982610937
  26. Pierre Nader, MDBurien, WA 981661962494898
  27. Murali Nalluri, M.D.Moses Lake, WA 988371669660379
  28. Jennifer Newton, M.D.Wenatchee, WA 988011225285380
  29. Toan Nguyen, M.D.Seattle, WA 981081467549998
  30. Kyung Noh, M.D.Gig Harbor, WA 983351417930454
  31. Eric Nordstrom, M.D.Vancouver, WA 986641255656716
  32. Venkat Nutalapati, MBBSLakewood, WA 984991114367869
  33. Thomas O'Meara, M.D.Olympia, WA 985021366448532
  34. Daniel O'Neill, MDRenton, WA 980551093897092
  35. Robert Ogburn, MDWenatchee, WA 988011740206762
  36. Ayah Oglat, MDMount Vernon, WA 982741548644149
  37. Sangik Oh, MDTacoma, WA 984051679550867
  38. Jeremiah Ojeaburu, M.D.Puyallup, WA 983741306810023
  39. Kevin Olden, MDYakima, WA 989021386682185
  40. Gilbert Ong, MDZillah, WA 989531740310283
  41. Miguel Ordonez Castellanos, MDSpokane, WA 992041013168392
  42. David Owens, M.D.Olympia, WA 985061144302159
  43. Ajay Pabby, MDSpokane, WA 992041205929163
  44. Kunjali Padhya, MDSeattle, WA 981041982867560
  45. Sowmya Palam, MDWenatchee, WA 988011093179483
  46. Robert Palmer, DOEverett, WA 982011306807128
  47. Gonzalo Pandolfi, MDYakima, WA 989021821010760
  48. Ioannis Papadopoulos, M.D.Omak, WA 988411215015383
  49. Sravanthi Parasa, M.DSeattle, WA 981041760700231
  50. Dhavan Parikh, M.D.Everett, WA 982011336376441

Source: CMS NPPES, primary taxonomy 207RG0100X: records by practice city and the list of records, file of Aug 9, 2026.

Washington ranks 12 of 51 per resident

  1. New Jersey7.9
  2. New Hampshire7.8
  3. Illinois7.1
  4. Washington6.8
  5. Florida6.7
  6. Missouri6.7
  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.

76.4% 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. Washington76.4%
  2. United States84.4%

Gastroenterology Physician records in Washington, measured

  • In a Medicare file407 of 533 · 76.4% here, 84.4% nationally
  • In the CMS Doctors and Clinicians file374 · 70.2% here, 73.7% nationally
  • Not updated in five years or more316 · 59.3% here, 55.6% nationally
  • Median graduation year2003 · the 373 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

533 NPPES records list gastroenterology physician (207RG0100X) as their primary taxonomy with a practice address in Washington: 6.8 per 100,000 residents against 6.2 nationally (50 states and D.C.). Seattle has 161 of them (30%).

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. Georgia530
  2. Virginia536
  3. Michigan550
  4. Maryland505

States with a similar rate per 100,000

  1. Florida6.7
  2. Missouri6.7
  3. Oregon6.6
  4. Illinois7.1

The largest states

  1. California2,140
  2. New York1,797
  3. Florida1,513
  4. Texas1,478
  5. Pennsylvania1,049

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.