Northside Heart, Canton. 460 Northside Cherokee Boulevard. Suite 150. Canton, GA 30115. Get Directions. 470-639-6250. Contact Information. Fax 770-345-0712. Northside Heart's Canton office is conveniently located near I-575, between the GA-20/Cumming Highway and GA-140/Hickory Flats Highway exits, on the campus of Northside Hospital Cherokee..