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Trust the Experts for your GI care

The best care available, and we're right in your neighborhood.


If you are experiencing any symptoms related to your digestive system, Colorado Gastroenterology offers a comprehensive range of advanced diagnostic and therapeutic services that can effectively identify their root cause and aid you in achieving optimal digestive health.

1st Avenue

8155 E 1st Ave
Denver, CO 80230
Monday - Friday 6:30am-4:30pm

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Ogden St.

1960 N Ogden Street Suite 220
Denver, CO 80218
Monday - Friday 8:30am-5:00pm

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Jennifer W. Brenner, M.D.

Gastroenterologist

Kevin M. Rufner, M.D.

Gastroenterologist

Kevin S. Sieja, M.D.

Gastroenterologist

Thomas E. Trouillot, M.D.

Gastroenterologist

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If you are experiencing a medical emergency, please call 9-1-1. This form is intended for non-urgent appointment requests only. Non-emergency requests will be responded to within 24-48 hours.