Motahar Hosseini, MD is a cardiac surgeon at Massachusetts General Hospital and an Assistant Professor of Surgery at Harvard Medical School. She provides comprehensive care across the full spectrum of adult cardiac surgery, including coronary artery bypass grafting, valve surgery, and aortic surgery.

Dr. Hosseini completed extensive training in general surgery, vascular surgery, and cardiothoracic surgery and is board certified in all three disciplines. This broad foundation supports her clinical focus on complex aortic and aortic valve diseases. Her expertise includes management of acute type A aortic dissection, valve-sparing aortic root replacement, and complex aortic root reconstruction for aneurysm and infective endocarditis.

She has a particular interest in the care of patients with connective tissue disorders, including Marfan syndrome. Her unique breadth of training across multiple surgical disciplines allows Dr. Hosseini to offer both open and endovascular approaches, delivering advanced, highly specialized care for even the most complex aortic and cardiac conditions. 

Her research focuses on clinical outcomes in adult cardiac surgery, with an emphasis on acute type A aortic dissection and connective tissue disorders. She has also contributed to research on outcomes in patients undergoing surgery for aortic valve and aortic root endocarditis.