Cambridge Health Alliance – Cambridge City Hospital Psychiatric Emergency Services number links the caller to the 24-hour emergency room for psychiatric care; Center for Child and Adolescent Development Website: www.challiance.org Phone: 617-665-1560 (Psychiatric Emergency Services); 617-665-3458 (Child and Adolescent Psychiatry Outpatient Services); 617-665-1000 (Main office); TTY 617-843-0744 Email: webmaster@challiance.org Address: 1493 Cambridge Street Cambridge, MA 02139