Company Description. Middlesex Gastroenterology Associates (MGA) is a team of board-certified physicians specializing in the diagnosis and management of digestive and liver diseases. Our state-of-the-art facilities in Middletown, CT are designed to provide compassionate, high-quality care tailored to meet our patients' needs and comfort. Role Description. Our practice is seeking a dependable, detail-oriented, enthusiastic Certified/Registered Med...