Highline Office Three Tree Medical Arts Building 16259 Sylvester Rd SW Ste 304 Burien, WA 98166 Tel: 206.431.9600 Fax: 206.214.0624. By appointment only. Clinic Hours: M-F 8:00AM-5:00PM Optical Hours: M-F 8:00AM-5:00PM *Highline Hours subject to change..