List of Quest Diagnostics Stores in Syosset, NY Outlet Note Regular Brands Quest Diagnostics New York Syosset Rating 4.7 based on 66 votes Products STD Testing Clinical Laboratory Services Drug Test Blood Test NameAddressPhone Name/Address/Phone Quest Diagnostics outlet - Syosset 175 Jericho Tpke, #304 (516) 279-6353 Quest Diagnostics outlet - Syosset 175 Jericho Tpke, Ste 212 (516) 496-0589 Quest Diagnostics outlet - Syosset 575 Underhill Blvd (516) 677-7717 People Also Viewed