Welcome to Gastroenterology & Hepatology Associates! We are a full service gastroenterology and hepatology practice in Hendersonville, Tennessee, providing a time-tested model of care designed to meet your unique needs! We have been serving middle Tennessee for 16 years, and we feel privileged to do so! Patient Portal. Our Offices. Meet the Team.About‧Locations‧Feedback‧Contact‧Randy Howard, MD‧Scott Hande, MD.