NPI Central

Colonoscopy Providers in Washington

Ranked by documented Medicare service volume (2024).

423 providers in Washington have Medicare claims for colonoscopy. Ordering reflects documented Medicare service volume — a transparency signal, not a quality or "best" ranking. Open any provider for their full profile, map, and the procedures they bill Medicare.

Providers in WA
423
Data year
2024
Registry vintage
June 2026

Colonoscopy providers in Washington

Ranked by Medicare service volume.
  1. 1
    Northwest Endoscopy Center, LLC

    Ambulatory Surgical Clinic/Center · Bellingham, WA

    2,117 Medicare services (2024)

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  2. 2
    Gastroenterology Associates, LLC

    Ambulatory Surgical Clinic/Center · Olympia, WA

    2,096 Medicare services (2024)

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  3. 3
    Digestive Disease & Endoscopy Center, LLC

    Ambulatory Surgical Clinic/Center · Silverdale, WA

    1,588 Medicare services (2024)

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  4. 4
    Olympia Multi-Specialty Clinic Ambulatory Procedures Cntr PLLC

    Ambulatory Surgical Clinic/Center · Olympia, WA

    1,514 Medicare services (2024)

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  5. 5
    The Polyclinic PLLC

    Ambulatory Surgical Clinic/Center · Seattle, WA

    1,420 Medicare services (2024)

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  6. 6
    Optum Care Washington PLLC

    Ambulatory Surgical Clinic/Center · Everett, WA

    1,390 Medicare services (2024)

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  7. 7
    Western Washington Endoscopy Centers LLC

    Ambulatory Surgical Clinic/Center · Tacoma, WA

    1,345 Medicare services (2024)

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  8. 8
    Spokane Digestive Disease Center, P.s.

    Ambulatory Surgical Clinic/Center · Spokane, WA

    1,309 Medicare services (2024)

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  9. 9
    Puget Sound Gastroenterology, PLLC

    Ambulatory Surgical Clinic/Center · Seattle, WA

    1,269 Medicare services (2024)

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  10. 10
    The Vancouver Clinic Inc Ps

    Ambulatory Surgical Clinic/Center · Vancouver, WA

    1,173 Medicare services (2024)

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  11. 11
    Mid-Columbia Endoscopy Center, LLC

    Ambulatory Surgical Clinic/Center · Kennewick, WA

    1,153 Medicare services (2024)

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  12. 12
    Western Washington Endoscopy Centers LLC

    Ambulatory Surgical Clinic/Center · Puyallup, WA

    1,063 Medicare services (2024)

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  13. 13
    The Eastside Endoscopy Center, LLC

    Ambulatory Surgical Clinic/Center · Issaquah, WA

    979 Medicare services (2024)

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  14. 14
    Puget Sound Gastroenterology, PLLC

    Ambulatory Surgical Clinic/Center · Kirkland, WA

    829 Medicare services (2024)

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  15. 15
    The Eastside Endoscopy Center LLC

    Ambulatory Surgical Clinic/Center · Bellevue, WA

    797 Medicare services (2024)

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  16. 16
    Western Washington Endoscopy Centers LLC

    Ambulatory Surgical Clinic/Center · Federal Way, WA

    748 Medicare services (2024)

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  17. 17
    Western Washington Medical Group, Inc Ps

    Ambulatory Surgical Clinic/Center · Everett, WA

    714 Medicare services (2024)

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  18. 18
    Peacehealth

    Ambulatory Surgical Clinic/Center · Bellingham, WA

    713 Medicare services (2024)

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  19. 19
    Colin WolslegelD.O.

    Gastroenterology Physician · Port Angeles, WA

    687 Medicare services (2024)

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  20. 20
    Puget Sound Gastroenterology, PLLC

    Ambulatory Surgical Clinic/Center · Kennewick, WA

    628 Medicare services (2024)

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  21. 21
    Ningxin ZengMD

    Gastroenterology Physician · Kennewick, WA

    624 Medicare services (2024)

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  22. 22
    Western Washington Endoscopy Centers LLC

    Ambulatory Surgical Clinic/Center · Gig Harbor, WA

    593 Medicare services (2024)

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  23. 23
    Virginia Mason Medical Center

    Ambulatory Surgical Clinic/Center · Bellevue, WA

    534 Medicare services (2024)

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  24. 24
    Western Washington Endoscopy Centers LLC

    Ambulatory Surgical Clinic/Center · Puyallup, WA

    534 Medicare services (2024)

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  25. 25
    Miguel Ordonez CastellanosMD

    Gastroenterology Physician · Spokane, WA

    506 Medicare services (2024)

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  26. 26
    Suresh PhilipMD

    Gastroenterology Physician · Kennewick, WA

    497 Medicare services (2024)

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  27. 27
    Inku HwangM.D.

    Gastroenterology Physician · Wenatchee, WA

    475 Medicare services (2024)

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  28. 28
    Samit DattaM.D.

    Gastroenterology Physician · Mount Vernon, WA

    455 Medicare services (2024)

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  29. 29
    Puget Sound Gastroenterology, PLLC

    Ambulatory Surgical Clinic/Center · Edmonds, WA

    450 Medicare services (2024)

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  30. 30
    Gonzalo PandolfiMD

    Gastroenterology Physician · Yakima, WA

    442 Medicare services (2024)

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  31. 31
    Kadlec Regional Medical Center

    Ambulatory Surgical Clinic/Center · Richland, WA

    442 Medicare services (2024)

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  32. 32
    Owen Baldwin

    Gastroenterology Physician · Wenatchee, WA

    430 Medicare services (2024)

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  33. 33
    Yuen YeeMD

    Gastroenterology Physician · Silverdale, WA

    413 Medicare services (2024)

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  34. 34
    Nicolas Villa GuillenM.D.

    Gastroenterology Physician · Spokane, WA

    403 Medicare services (2024)

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  35. 35
    Wen-Huan HoMD

    Gastroenterology Physician · Bellingham, WA

    389 Medicare services (2024)

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  36. 36
    Kalyan KannegantiM.D

    Gastroenterology Physician · Tacoma, WA

    384 Medicare services (2024)

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  37. 37
    Amy TsuchidaMD

    Gastroenterology Physician · Tacoma, WA

    370 Medicare services (2024)

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  38. 38
    Pacmed Clinics

    Ambulatory Surgical Clinic/Center · Seattle, WA

    367 Medicare services (2024)

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  39. 39
    Robert LawsonM.D.

    Gastroenterology Physician · Spokane, WA

    367 Medicare services (2024)

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  40. 40
    Craig PepinM.D.

    Gastroenterology Physician · Seattle, WA

    363 Medicare services (2024)

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  41. 41
    Narendra SiddaiahMD

    Gastroenterology Physician · Silverdale, WA

    363 Medicare services (2024)

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  42. 42
    Darien HeapM.D.

    Gastroenterology Physician · Olympia, WA

    358 Medicare services (2024)

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  43. 43
    Vu LeMD

    Gastroenterology Physician · Union Gap, WA

    357 Medicare services (2024)

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  44. 44
    Somprak BoonpongmaneeM.D.

    Gastroenterology Physician · Kennewick, WA

    348 Medicare services (2024)

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  45. 45
    John KuczynskiM.D.

    Gastroenterology Physician · Olympia, WA

    342 Medicare services (2024)

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  46. 46
    Ali GaskariMD

    Gastroenterology Physician · Spokane Valley, WA

    341 Medicare services (2024)

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  47. 47
    Virginia Mason Medical Center

    Ambulatory Surgical Clinic/Center · Lynnwood, WA

    341 Medicare services (2024)

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  48. 48
    Ajay PabbyMD

    Gastroenterology Physician · Spokane, WA

    337 Medicare services (2024)

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  49. 49
    North Kitsap Ambulatory Surgery Center, LLC

    Ambulatory Surgical Clinic/Center · Poulsbo, WA

    337 Medicare services (2024)

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  50. 50
    Johnathan HaM.D.

    Gastroenterology Physician · Lakewood, WA

    335 Medicare services (2024)

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Counts and ordering reflect Medicare fee-for-service claims (2024) from the CMS Medicare Physician & Other Practitioners dataset — a 65+ subset, not all care, and not a quality, outcome, or "best" ranking. Absence from this list does not mean a provider does not perform colonoscopy. Source: CMS NPPES (June 2026).