Program Leadership


Terrence D. Welch, MD, FACC, FASE
Program Director, Cardiovascular Disease Fellowship
Associate Professor of Medicine and Medical Education
Geisel School of Medicine at Dartmouth

Dr. Welch studied at the University of Notre Dame (BS) and then at Washington University School of Medicine (MD). He completed post-graduate training in internal medicine at the University of Michigan and in cardiovascular disease at the Mayo Clinic. Dr. Welch has worked as a staff cardiologist at Dartmouth Hitchcock Medical Center since 2012. His practice and academic interests include echocardiography, structural heart disease, heart failure, and pericardial disease. He also serves as the Medical Director for the Cardiac Rehabilitation Program.

Dr. Welch enjoys teaching at all levels, from undergraduate medical education to continuing medical education. He was the recipient of the H. Proctor Harvey Young Teacher Award in 2017 from the American College of Cardiology. After serving three years as Associate Program Director, Dr. Welch became Program Director for the Cardiovascular Disease Fellowship in 2019. He also directs the preclinical Cardiovascular Medicine course at the Geisel School of Medicine at Dartmouth.


Gregory A. Dadekian, MD, FACC, FACP
Associate Program Director, Cardiovascular Disease Fellowship
Assistant Professor of Medicine and Medical Education
Geisel School of Medicine at Dartmouth

Dr. Dadekian is a graduate of Holy Cross (BA, 2002) where he studied Biology and Economics. As a member of the Brown-Dartmouth Program, attended Dartmouth Medical School (2002 to 2004) and the Warren Alpert School of Medicine at Brown University (MD, 2006). He received training in Internal Medicine at Yale-New Haven Hospital (2006 to 2009) and then served in the United States Navy at Walter Reed National Military Medical Center (2009 to 2013), achieving a rank of Lieutenant Commander.

While in the Navy, Dr. Dadekian served as the Director of the Hospital Medicine service at Walter Reed and also as an associate program director for the Internal Medicine residency. He was integrally involved in the daily education of medical students and the Internal Medicine house staff, which sparked his interest in academic medicine, specifically graduate medical education.

Upon completion of his Naval service, Dr. Dadekian returned to the Upper Valley to complete his fellowship in Cardiovascular Medicine (2013 to 2016) and then joined the faculty at Dartmouth Hitchcock Medical Center. As a non-invasive Cardiologist, his clinical focus is in imaging—transthoracic and transesophageal echocardiography, stress testing, and nuclear imaging. He is also involved in sports cardiology and serves as a team physician for Dartmouth College.