Information on GNC in Standish, MI 48658 Outlet Note Regular Brands GNC Michigan Standish 330050 Rating 4.7 based on 97 votes Address 301 South Main Street Standish, MI 48658 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 - Bay City GNC Outlet - Bay City GNC Outlet - Bridgeport GNC Outlet - Birch Run People Also Viewed