Information on GNC in Seattle, WA 98126 Outlet Note Regular Brands GNC Washington Seattle 329797 Rating 4.7 based on 97 votes Address 2600 sw Barton Street ste H1 Seattle, WA 98126 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 - Seattle GNC Outlet - Seattle GNC Outlet - Seattle GNC Outlet - Seattle People Also Viewed