Mariann M. Giannone, BS, RDMS Mariann M. Giannone, BS, RDMS, is a perinatal sonographer with the Center for Fetal Diagnosis and Treatment at The Children's Hospital of Philadelphia. Locations: Main Campus Phone: 1-800-468-8376 Education and Training Board CertificationOb/Gyn, Abdominal, Neurosonography, Fetal EchocardiographyUndergraduate DegreeBS - Thomas Jefferson University, Philadelphia, PA Titles and Academic Titles Perinatal Sonographer Departments and Services Center for Fetal Diagnosis and TreatmentDepartment of Radiology 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.