Westchester Medical Center Share: Hospitals Westchester Medical Center Visit Website 100 Woods Road Valhalla, NY 10595 (877) 962-3627 (914) 493-1138 (fax) Facebook Hours: Always Open About Map About Westchester Medical Center (WMC) is the Hudson Valley region's advanced care and Level 1 Trauma center & Maria Fareri Children’s Hospital, the only all-specialty children's hospital. What's Nearby? Distance: 5 10 15 20 25 50 mi.