Walter Orenstein, MD Dr. Orenstein is the associate director of the Emory Vaccine Center at Emory University School of Medicine in Atlanta, Georgia, and a member of the Vaccine Education Center Advisory Board at CHOP. Titles and Academic Titles Associate Director, Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA Departments and Services Vaccine Education Center Patient Experience Ratings About the Patient Experience Rating System The Patient Experience Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question. Responses are measured on a scale of 1 to 5 with 5 being the best score. The comments are submitted by patients and families and reflect their views and opinions. The comments are not endorsed by and do not reflect the views of Children’s Hospital of Philadelphia.