Ari Brettman, MD joined Clarus in September 2014. Prior to Clarus, Dr. Brettman completed a residency at Massachusetts General Hospital in internal medicine and a fellowship in cardiology. Dr. Brettman was also an NIH post-doctoral fellow at the MGH Center for Systems Biology, where he investigated the regulation of cellular fat storage and used big data analytics at Partners Healthcare to improve disease management. Dr. Brettman is a board observer for Entasis Therapeutics. Dr. Brettman received his M.D. from Duke University and his A.B. in History and Science from Harvard College. While a medical student, he was a Sarnoff Cardiovascular Research Foundation Fellow at Stanford University, where he studied angiogenesis.