Mass-Care is an umbrella organization for dozens of member groups that represent diverse constituencies.  Together these organizations stand for over 500,000 supporters of single payer reform in Massachusetts.

Hill Town Medicare for All Advocacy Group
Progressive Democrats of America Massachusetts
Right Care Alliance Boston Chapter
South Shore Coalition for Human Rights
UNITEHERE New England Joint Board
We Want Bernie Worcester
Franklin County Continuing the Political Revolution
League of Women Voters of Massachusetts
Massachusetts Jobs with Justice
Massachusetts Nurses Association
Massachusetts Senior Action Council
Massachusetts Teachers Association
Physicians for a National Health Program Mass. Chapter
Western Massachusetts Medicare for All