Richard W. Hass, PhD, is Associate Professor in the Jefferson College of Population Health. He serves as the Program Director for both the PhD in Population Health Science and the Master's in Health Data Science programs. Dr. Hass is an accomplished quantitative scientist who began his career working at the nexus of mathematical psychology, cognitive science, and education research. Over the last 8 years his work has shifted toward three general areas: development and validation of patient-reported outcomes and experience measures,:extraction and analysis of real-world data from electronic medical records; registries;  CDC national interview datasets; and investigations into the relationship between health-related social needs and healthcare utilization. This work is bolstered by collaborators in family medicine, oncology, head and neck surgery, neurology, hepatology and gastroenterology, and emergency medicine. He has authored dozens of articles on these topics, chaired several dissertation committees, and mentored countless undergraduate and graduate students on research design, statistics, and the scientific method more generally.