Information on GNC in Baltimore, MD 21215 Outlet Note Regular Brands GNC Maryland Baltimore 325357 Rating 4.7 based on 97 votes Address 3804 Liberty Heights Avenue Baltimore, MD 21215 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