CHA formed in 1996 when two Massachusetts hospitals - Cambridge Hospital and Somerville Hospital - joined together as an integrated system. This combined entity was better able to meet the needs of its patients and fulfill a shared community health mission. In 2001, the system acquired Whidden Hospital in Everett, MA and associated healthcare services in Malden and Revere. This expanded the system’s geographic range and allowed it to continue helping individuals and families in need.