Cambridge Health Alliance (CHA) is a healthcare provider in Cambridge, Somerville and Boston’s metro-north communities in Massachusetts. CHA advertises services including primary care, specialty care and mental health/substance use services. It includes three hospital campuses, primary care and specialty practice facilities, and the Cambridge Public Health Dept. CHA maintains an affiliation with Beth Israel Deaconess Medical Center in Boston. CHA is a Harvard Medical School teaching affiliate and is also affiliated with Harvard School of Public Health, Harvard School of Dental Medicine and Tufts University School of Medicine. CHA includes three main hospital campuses, primary care and specialty practices, and the Cambridge Public Health Department. The three CHA hospital campuses are Cambridge Hospital, Somerville Hospital, and Everett Hospital. In addition to the three hospital campuses, CHA has locations in Cambridge, Somerville, Malden, Revere, and Everett.