Northside Hospital Forsyth. C/O Patient Name and Room Number (if known) 1200 Northside Forsyth Drive Cumming, GA 30041. Gift Shops. Area Accommodations. Planning Your Visit FAQs. Please call 770-844-3200 for visiting hour details. Updated Visitation Policy. To help prevent the transmission of COVID-19, Northside Hospital is taking precautions ....