Information on GNC in Westhampton Beach, NY 11978 Outlet Note Regular Brands GNC New York Westhampton Beach 330620 Rating 4.7 based on 97 votes Address 161 Main Street Westhampton Beach, NY 11978 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 - Baldwin GNC Outlet - Albertson GNC Outlet - Auburndale GNC Outlet - Ardsley People Also Viewed