Ammonoosuc Community Health Serv. Share: Health & WellnessMedical Services Ammonoosuc Community Health Serv. Visit Website 25 Mt Eustis Rd Littleton, NH 03561 (603) 444-2464 About Map About A non-profit community health center offering a network of affordable health services to over 10,000 patients. Serving 26 towns in northern Grafton and Coos Counties. What's Nearby? Distance: 5 10 15 20 25 50 mi.