Information on GNC in Baltimore, MD 21234 Outlet Note Regular Brands GNC Maryland Baltimore 325367 Rating 4.7 based on 97 votes Address Parkville Shopping Center, 7651 Harford Road Baltimore, MD 21234 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