Mercy Clinic Gastroenterology - Lincoln

1000 E. Cherry Street
Troy, MO 63379
Fax: (636) 561-6208
Hours of Operation:
Tuesday: 9 a.m. - 4:30 p.m.
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Mercy Clinic Digestive Disease gastroenterology specialists provide diagnosis and treatment of the esophagus, stomach, small intestine, colon, liver, gall bladder and pancreas. Our doctors offer a broad range of endoscopic procedures, as well as expertise in biliary endoscopy, endoscopic ultrasound and management of chronic liver disease.

Our facilities are located throughout the St. Louis and St. Charles metropolitan areas. Our locations include Mercy Hospital St. Louis, offices in Chesterfield, Clayton-Clarkson, Zumbehl Road and Lake St. Louis, and two satellite endoscopy centers. The centers are staffed by highly experienced, board-certified endoscopists, anesthesiologists and registered nurses specially trained in endoscopy.

Mercy Clinic Digestive Disease physicians, nurses and staff are committed to delivering the highest quality of health care to patients while maintaining a commitment to clinical excellence.


Download Our Procedure Preperation Guides:
Colonoscopy Instructions
Upper Endoscopy Instructions


Get a Colonoscopy Fact Sheet

Learn your risks, how the procedure works and when to schedule one.

Our Providers

James H. Petersen, MD, Mercy
Mercy Clinic
Laura Lynne Ulmer, DO, Mercy
Mercy Clinic