Information on GNC in Mount Vernon, NY 10550 Outlet Note Regular Brands GNC New York Mount Vernon 328516 Rating 4.7 based on 97 votes Address 47 East Prospect Avenue Mount Vernon, NY 10550 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 - Ardsley GNC Outlet - Astoria GNC Outlet - Auburndale GNC Outlet - Astoria People Also Viewed