Raised in Gaithersburg, MD, Dr. Marcus graduated with honors from the University of Rochester School of Medicine and Dentistry in 2001. His medical internship and residency were performed at Beth Israel Deaconess Medical Center (Harvard Medical School) in Boston, where he also served as Chief Resident and Clinical Instructor of Medicine.Dr. Marcus completed his nephrology training at Tufts-New England Medical Center in 2004. He is board certified in internal medicine and nephrology, and is an Assistant Professor of Medicine at the George Washington University School of Medicine and Health Sciences. He is married with three children, and enjoys playing piano and cycling.