Customer Service

ADEA DHCAS Applicant Customer Service

Available Monday – Friday, 9 a.m. to 5 p.m. Eastern Time (except Federal Holidays)

Email:  support@adeadhcas.myliaison.com
Phone: 617-612-2095

Mailing Documents: 
To submit documents via the USPS, use the P.O. box address below:
ADEA DHCAS Processing Department
PO Box 9129
Watertown, MA 02471 USA

Note: USPS (United States Postal Service) Delivery Confirmation does NOT verify receipt of materials at ADEA DHCAS.