Gateway Gastroenterology

Gateway Gastroenterology is a group of eight board certified gastroenterologists.

Our goal is to is to provide outstanding care in a timely, courteous, and professional manner. Our mission is to aid in improving your digestive health and also to be a resource to your primary care physician in caring for you. We offer a wide variety of gastroenterology services including inpatient and outpatient consultation as well as a broad range of endoscopic procedures including upper endoscopy and colonoscopy. Our Gastroenterologists are: David D. Benage, MD; Jeffrey T. Kreikemeier, MD; Loren H. Marshall, MD; Jeffrey E. Mathews, MD; Brian C. McMorrow, MD; Richard T. Riegel, MD; Andrew Y. Su, MD; Fred H. Williams, MD. Our physicians also practice at the following location: Gateway Endoscopy Center,12855 N. Forty Drive, Suite 150, St. Louis, MO 63141, (314) 336-1130.