• Director for Research, Center for Healthcare Improvement and Patient Safety (CHIPS)
• Associate Director of Research, Center for Evidence-Based Practice (CEP)
• Senior Fellow, Leonard Davis Institute for Health Economics
• Senior Scholar, Center for Clinical Epidemiology & Biostatistics
• Assistant Professor of Medicine (Gastroenterology) at the Hospital of the University of Pennsylvania

Education and training

• Medical School: University of Medicine and Dentistry of New Jersey
• Residency: Johns Hopkins Hospital
• Residency: Hospital of the University of Pennsylvania