On May 19, 2020 The Health Connector changed its mailing address. The new mailing address is Health Connector Processing Center, P.O. Box 4404, Taunton, MA 02780.
The MassHealth-Health Connector Mail/Fax Cover Sheet has been updated to reflect the new mailing address; https://www.mass.gov/doc/masshealth-health-coverage-mailfax-cover-sheet-0/download
A Job Aid showing where to send documents has also been updated with the new mailing address; it also shows fax numbers:
Assister Updates with this information are attached.