Contact Us Contact Us Contact the Trisomy 18 Foundation with any questions or requests for information. Online Form Our Location Trisomy 18 FoundationNational OfficePO Box 320Flushing, Michigan 48433 Get in Touch 810-867-4211 (ET)Voicemails answered within 24 hrs.kshaughnessy@trisomy18.orgKris Shaughnessy, Executive Director Make a Donation To send a donation by mail, download this form and mail it with your check to our address listed on this page.