J. Susnow

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Nathan J. SusnowNathan J. Susnow


Dr. Susnow is a board-certified and fellowship-trained gastroenterologist with additional expertise in complex liver disease. Dr. Susnow began practicing as a gastroenterologist in Boulder and Denver in 2016. He sees patients in the Boulder, Lafayette and Longmont GI clinics at Gastroenterology of the Rockies.

Dr, Susnow obtained his medical degree from the University of Texas Southwestern Medical School, in Dallas–followed by completing his residency at the University of Colorado, in Denver. As a duel-fellowship holder–his GI fellowship comes from the University of Washington, in Seattle — and completed his transplant hepatology fellowship at Northwestern Memorial Hospital, in Chicago.

When he’s not treating patients, you can find Dr. Susnow on the ski slopes or a hiking trail — unless he’s bike commuting — or simply enjoying time with his family.

Medical School

University of Texas Southwestern Medical School – Dallas, TX


University of Colorado – Denver, CO

GI Fellowship

University of Washington – Seattle, WA

Transplant Hepatology Fellowship:

Northwestern Memorial Hospital – Chicago, IL

Primary Practice Locations

Hospital Affiliations

  • Boulder Community Health
  • Intermountain Health Good Samaritan Hospital
  • Intermountain Health Lutheran Medical Center
  • Intermountain Health St. Joseph Hospital​


  • Chief GI Fellow, University of Washington 2009-2010


  • American Gastroenterological Association
  • America Association for the Study of Liver Diseases

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