Information on GNC in Somerville, MA 02145 Outlet Note Regular Brands GNC Massachusetts Somerville 329928 Rating 4.7 based on 97 votes Address 299 Broadway Somerville, MA 02145 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 - Cambridge GNC Outlet - Cambridge GNC Outlet - Boston GNC Outlet - Boston People Also Viewed