Kathryn Harris, NP Nurse Practitioner, Medical Intensive Care Unit Image Email Email Me Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Listen Kathryn Harris, NP Nurse Practitioner, Medical Intensive Care Unit Medical Services Programs & Services Medical Critical Care Medical Intensive Care Unit Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115