Elevation Burger has several locations throughout the country and is a growing franchise. They offer grass-fed beef burgers to which you can add as many of the available toppings as you like. They will also wrap it in lettuce for you. Their french fries are cooked in olive oil instead of the usual alternatives and some of the locations even offer ordering online!
They have locations in CA, FL, MD, ME, NJ, NV, NY, PA, TX and VA.
