Julie Chang, MSN, RN, CRNP Julie Chang, MSN, RN, CRNP, is a nurse practitioner in the Cardiac Center at The Children's Hospital of Philadelphia. Locations: Main Campus Phone: 215-590-4040 Education and Training Additional TrainingDrexel UniversityUndergraduate DegreeTrent University, Ontario, Canada Titles and Academic Titles Nurse Practitioner Departments and Services Cardiac Center