Intern, Department of Medicine, Duke University School of Medicine, Durham, NC
Junior Assistant Resident, Department of Medicine, Duke University School of Medicine, Durham, NC
Visiting Junior Registrar, John Radcliffe Hospital, Oxford, England
Senior Assistant Resident, Department of Medicine, Duke University School of Medicine,, Durham, NC
Fellow, Duke Cardiovascular Disease Fellowship Program, Department of Medicine, Duke University School of Medicine, Durham, NC
Fellow, Advanced Training in Cardiology Fellowship Program, Department of Medicine, Duke University School of Medicine, Durham, NC
Research Fellow, Echocardiography Laboratory, Department of Medicine, Duke University School of Medicine, Durham, NC
Clinical Research Fellow, Duke Clinical Research Institute, Durham, NC
2007 - 2010 Associate Professor of Medicine, Department of Medicine, Duke University School of Medicine,, Durham, NC
2010 - 2012 Associate Professor of Medicine with Tenure, Department of Medicine, Duke University School of Medicine, Durham, NC
2012 - 2018 Professor of Medicine with Tenure, Department of Medicine, Duke University School of Medicine, Durham, NC
2012 - 2018 Professor of Medicine with Tenure, Duke Clinical Research Institute, Duke University, Durham, NC
2018 New Recruit, Cardiology (Medicine), Yale School of Medicine
2018 - present Professor, Cardiology (Medicine), Yale School of Medicine, New Haven, CT
2018 - present Robert W. Berliner, Professor, Cardiology (Medicine), Yale School of Medicine, New Haven, CT
2002 - 2006 Director, Heart Failure Research, Department of Medicine, Duke University School of Medicine, Durham, NC
2006 - 2012 Director, Late Phase Cardiovascular Trials, Duke Clinical Research Institute, Duke University, Durham, NC
2007 - 2018 Director, Cardiac Diagnostic Unit and Echocardiography Laboratories, Department of Medicine, Duke University School of Medicine, Durham, NC
2009 - 2018 Chief, Cardiovascular Imaging, Division of Cardiology, Duke University School of Medicine, Durham, NC
2009 - 2018 Associate Director, Duke Heart Center, Duke University School of Medicine, Durham, NC
2012 - 2018 Assistant Director, Clinical Trials, Duke University, Durham, NC
2018 - present Chief, Cardiovascular Medicine, Yale School of Medicine, New Haven, CT
2018 - present Chief, Cardiovascular Medicine, Yale New Haven Hospital, Yale New Haven Hospital, New Haven, CT
2018 - present Physician-in-Chief, Heart and Vascular Center, Yale New Haven Health, Yale New Haven Health, New Haven, CT
2019 - present Deputy Director, Clinical Trials Innovation, Yale Center for Clinical Investigation (YCCI), Yale School of Medicine, New Haven, CT