National
- Autism Society of America (A.S.A)
- Children and Adults with Attention Deficit Disorder
- TEACCH (Treatment and Education of Autistic and related Communication Handicapped Children)
- Wrightslaw
- Autism Speaks
Regional
- Global and Regional Asperger's Syndrome Partnership
- Online Asperger's Syndrome Information and Support (O.A.S.I.S)
- Parent to Parent of New York State
Long Island
- Advocates for Individuals with High Functioning Autism of NY
- Autism Society of America--Nassau Suffolk Chapter
- Elija Foundation
- Community Resource Database of Long Island
- Stony Brook University Dental Care for the Developmentally Disabled
Government Agencies and Programs