Responsibilities. Saint Simons By-The-Sea is a 101 bed psychiatric and addictive disease hospital for adults and adolescents. We strive to provide quality mental health treatment and addiction treatment services in the area. Located on Saint Simons Island, Ga., Saint Simons By-The-Sea’s serene island setting ensures privacy and anonymity, enabling the patient to concentrate on recovery. Our hospital is conveniently located within driving distance...