Information on GNC in Baltimore, MD 21206 Outlet Note Regular Brands GNC Maryland Baltimore 325363 Rating 4.7 based on 97 votes Address Gardenville s.c., 4214 Frankford Avenue Baltimore, MD 21206 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