Tue 8:00am - 4:00pm. Wed 8:00am - 4:00pm. Thu 8:00am - 4:00pm. Fri 8:00am - 4:00pm. Sat Closed. Sun Closed. Make an Appointment. Show Phone Number. Gastroenterology Associates is a medical group practice located in Inverness, FL that specializes in Gastroenterology, and is open 5 days per week..