Information on GNC in Holyoke, MA 01040 Outlet Note Regular Brands GNC Massachusetts Holyoke 327363 Rating 4.7 based on 97 votes Address 1504 North Hampton Street Holyoke, MA 01040 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 - Chicopee GNC Outlet - East Longmeadow GNC Outlet - Auburn GNC Outlet - Clinton People Also Viewed