Patient Portal - Southside Medical Care Union City . Health (1 days ago) Secure online portal for patients of Southside Medical Care, a medical practice providing family medicine and occupational medicine to patients in Union City, Georgia and the surrounding south Fulton area. 6325 Shannon Pkwy, Suite D Union City, GA 30291 Telephone: 770-964-1400 Fax: 770-306-1343..