- 5700 Sixth Ave. S Suite 208 Seattle WA 98108 Phone: (206) 763-3373 Email:featwa@featwa.org Fax: (206) 763-1922 Home | Autism | FEAT | Photo Gallery | Feedback 05/03/02 Families for Effective Autism Treatment (FEAT) FEAT of Washington State is dedicated to ensuring that all children with autism spectrum disorders have the opportunity to reach their full potential through effective behavioral ...www.featwa.org