Developmental Disabilities Institute

Developmental Disabilities Institute (DDI) was founded in 1961 to provide therapeutic intervention and address the special education needs of children with autism and other developmental disabilities. Today, DDI is a dynamic, nonprofit, multi-site agency, each day serving hundreds of children and adults with autism and other developmental disabilities, providing educational, residential, habilitative, vocational, transportation and other supports to the Long Island community. DDI’s educational, residential, day and vocational supports are as diverse as the people we serve. Through nearly 60 years of sustained effort, DDI has grown substantially. Today, we are the leading provider of services and programs for children and adults with autism on Long Island, and we are acknowledged by the State and among our peers for our expertise in supporting both children and adults with complex and challenging behaviors. Our agency recognizes the unique needs of each person we care for, maintaining the highest standards of teaching and training for our children and adults, their families, and our staff. We pride ourselves on utilizing research-based methods across all our programs.