Information on GNC in Baltimore, MD 21209 Outlet Note Regular Brands GNC Maryland Baltimore 325356 Rating 4.7 based on 97 votes Address Greenspring s.c., 2855 Smith Avenue Baltimore, MD 21209 Phone Hours may vary in different stores. For accurate hours, please contact each store directly. Suite643 Hours may vary in different stores. For accurate hours, please contact each store directly. Nearby GNC Outlet GNC Outlet - Baltimore GNC Outlet - Baltimore GNC Outlet - Baltimore GNC Outlet - Baltimore People Also Viewed