Dr. Ochieng is a gastroenterology specialist who treats adult patients for all types of general GI concerns, including: colon cancer screenings, hepatitis, esophageal dilation, hemorrhoids, and fecal microbiota transplantation.

Dr. Khan is a gastroenterology specialist who treats adult patients for all types of general GI concerns, including: colon cancer screenings, hepatitis, esophageal dilation, hemorrhoids, and fecal microbiota transplantation.

Dr. Sandberg is a member of Midwest Surgical Specialists, located in O'Fallon, Missouri. Midwest Surgical Specialists is part of BJC Medical Group of Missouri, an established, multi-specialty physician group. Dr. Sandberg performs all aspects of general surgery with an interest in breast surgery, colon surgery and laparoscopic procedures.

Dr. Miller is a member of Benrus Surgical at Barnes-Jewish St. Peters. He is fellowship trained in colon and rectal surgery. Dr. Miller performs laparoscopic colon and rectal surgeries. His interests are diverticulitis, colon and rectal cancer.

Dr. Nissing attended medical school and completed his internship and residency at Washington University School of Medicine in St. Louis. He completed his fellowship at St. Louis University Hospital. Dr. Nissing has been in practice since 2006.

Dr Tarik Firozi, is a highly trained Gastroenterologist and Hepatologist with 16 years of training, teaching and Practice experience. He has been a Medical doctor for 24 years. He is fellowship trained and Board Certified in Gastroenterology.