Kathryn Drennen, MSN, CPNP Nurse Practitioner, Orthopedic Center Image Phone 617-355-6021 Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Listen Kathryn Drennen, MSN, CPNP Nurse Practitioner, Orthopedic Center Medical Services Programs & Services Orthopedic Trauma Program Orthopedics and Sports Medicine Languages English Education Undergraduate School Fairfield University Fairfield CT Graduate School Boston College Chestnut Hill MA Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115