Skip to main content
Developmental Disabilities Institute
Main Menu Toggle
DDI At A Glance
Message From Our Executive Director
2018-A Year in Review
Early Childhood 0-5 Years
School Age 5-21 Years
Adult 21+ Years
Support and Advocacy
Frequently Asked Questions
Guide to Acronyms
Walk in the Park & Family Picnic
Golf Classic 2019
Dancing for Autism
Other Giving Options
Join Our Team
The Welcome Wagon
Teachers and student smiling in classroom.
Developmental Disabilities Institute (DDI) has been assisting individuals with developmental disabilities and their families on Long Island for almost 60 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.
DDI Strategic Plan 2019-2021.pdf