Mountain Valley Developmental Services Share: Non-Profit: Organizations Mountain Valley Developmental Services Visit Website Request Info 700 Mt. Sopris Dr. Gelnwood Springs, CO 81601 (970) 945-2306 1-800-626-6450 (970) 945-6469 (fax) About Map About Mountain Valley Developemental Services provides vocational and residental services to persons with developmental disabilities who live and work in the Rifle area What's Nearby? Distance: 5 10 15 20 25 50 mi.