Synergy of Monticello, Inc. Share: Medical Services Synergy of Monticello, Inc. Visit Website Request Info 64 Jefferson Street, Suite 1 Monticello, NY 12701 (845) 791-8800 (845) 791-7051 (fax) Facebook Hours: Mon 9:00AM 7:00PM Tues 9:00AM 5:00PM Wed 9:00AM 7:00PM Thurs 9:00AM 5:00PM Fri 9:00AM 7:00PM About Map About Our commitment to you is to offer the most comprehensive and contemporary mental health care available. What's Nearby? Distance: 5 10 15 20 25 50 mi.