Katherine Penny, DNP, APRN, WOCN, CPNP APRN Director, Inpatient Cardiology; Cardiac Nurse Practitioner, Level III; APP Educator, Department of Cardiology Image Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Listen Katherine Penny, DNP, APRN, WOCN, CPNP APRN Director, Inpatient Cardiology; Cardiac Nurse Practitioner, Level III; APP Educator, Department of Cardiology Medical Services Programs & Services Inpatient Cardiology Heart Center Cardiology Languages English Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115