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Developmental Disabilities Institute
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DDI At A Glance
Message From Our Executive Director
Early Childhood 0-5 Years
School Age 5-21 Years
Adult 21+ Years
Support and Advocacy
Frequently Asked Questions
Guide to Acronyms
Dancing for Autism
Walk in the Park & Family Picnic
Join Our Team
The Welcome Wagon
Save the Date * DDI Walk in the Park & Family Picnic * 9/23/18
Little boy with black Yankees hat on
Developmental Disabilities Institute (DDI) has been assisting individuals with developmental disabilities and their families on Long Island for more than 50 years.
During that time, we have evolved and grown, serving larger numbers of people and expanding the types of supports and services we provide.
Our evolution has always been focused on delivering on our mission to help children and adults with autism and other developmental disabilities experience growth and fulfillment.