Gastroenterology Associates of Tidewater We are a 100% gastroenterology practice with two locations and six physicians. Our physicians are board-certified in Internal Medicine and Gastroenterology and have been participating in clinical research since 1995. Our Investigators are known for their high caliber work, research experience, community reputations, and significant patient databases which ensure timely and easily met enrollment goals and successfully completed clinical trials. Our clinical trials are conducted in our Chesapeake location which is conveniently located within 20 minutes of Norfolk International Airport. Gastroenterology Associates of Tidewater is a proud member of Tidewater Gastroenterology, PLLC.