Christine Placidi, RN Staff Nurse, Cardiac Intensive Care Unit Image Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Listen Christine Placidi, RN Staff Nurse, Cardiac Intensive Care Unit Medical Services Programs & Services Cardiac Intensive Care Heart Center Cardiology Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115