Timothy G Haydock MD 400 E Main St Northern Westchester Hospital - Emergency Department Katonah, New York, Phone: 914-666-1200 Doctor Category: Emergency Medicine Profile Let this business know you found them on Hudson Valley's Online Directories. Locations Katonah 400 E Main St Northern Westchester Hospital - Emergency Department Katonah, New York 10549-3417 Claim/Edit Listing