Kevin S. Sieja, MD

Gastroenterologist located in Denver, CO & Aurora, CO

About Dr. Sieja

Kevin S. Sieja, MD, grew up in the Chicago area. As a member of the team at Colorado Gastroenterology, he treats all disorders of the gastrointestinal system and liver.

Dr. Sieja attended the University of Notre Dame in South Bend, Indiana, graduating summa cum laude, then received his medical degree from Northwestern University in Chicago, Illinois. While in medical school, he became a member of the prestigious Alpha Omega Alpha Honor Medical Society.

After finishing medical school, Dr. Sieja moved to Colorado for his Internal Medicine residency and Gastroenterology fellowship at the University of Colorado Health Sciences Center in Denver. During his fellowship, he published several important works related to research on disorders of the liver and intestine. He completed his fellowship in 2006 and is board-certified in Gastroenterology.

Today, Dr. Sieja is the managing partner of Colorado Gastroenterology.  He mentors medical residents at St. Joseph’s Hospital and Presbyterian St. Luke’s Hospital.  And he is a member of the American Gastroenterological Association and the American Society of Gastrointestinal Endoscopy. 

Dr. Sieja’s wife, Amber, is also a physician, practicing internal medicine at the University of Colorado. In their free time, they enjoy the outdoors with their three children. 

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,  Office of Kevin S. Sieja, MD

Kevin S. Sieja, MD, grew up in the Chicago area. As a member of the team at Colorado Gastroenterology, he treats all disorders of the gastrointestinal system and liver.

Dr. Sieja attended the University of Notre Dame in South Bend, Indiana, graduating summa cum laude, then received his medical degree from Northwestern University in Chicago, Illinois. While in medical school, he became a member of the prestigious Alpha Omega Alpha Honor Medical Society.

After finishing medical school, Dr. Sieja moved to Colorado for his Internal Medicine residency and Gastroenterology fellowship at the University of Colorado Health Sciences Center in Denver. During his fellowship, he published several important works related to research on disorders of the liver and intestine. He completed his fellowship in 2006 and is board-certified in Gastroenterology.

Today, Dr. Sieja is the managing partner of Colorado Gastroenterology.  He mentors medical residents at St. Joseph’s Hospital and Presbyterian St. Luke’s Hospital.  And he is a member of the American Gastroenterological Association and the American Society of Gastrointestinal Endoscopy. 

Dr. Sieja’s wife, Amber, is also a physician, practicing internal medicine at the University of Colorado. In their free time, they enjoy the outdoors with their three children. 


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Most Major Insurances Accepted

We accept most insurance plans at Colorado Gastroenterology. Please verify with our staff that we accept your current insurance when you call to schedule. The list below is an example of insurance plans we accept, but may not be accurate as our contracts frequently change.

Anthem Blue Cross
Cigna
Humana
Rocky Mountain Health Plans
United Health Care