Dr. Nancy Gracin, MD is a general cardiologist at the Corrigan Minehan Heart Center at Massachusetts General Hospital with 25+ years of clinical experience, board-certified in Cardiology and echocardiography, and Assistant Professor of Medicine. She is a well-known clinician in dysautonomia and POTS — directly relevant to Long COVID. Her clinical interests also include valvular heart disease, coronary artery disease, arrhythmias, difficult hypertension, and heart failure. She practices across three Mass General Brigham locations: Boston, Waltham, and Danvers. Languages: English, French, Serbo-Croatian. MD Georgetown; residency and fellowship Rush University.