Dr. Allan Stewart

  • Vascular Surgery
  • New York, NY
  • Languages supported at his practice: English
  • Accepting New Patients

Dr. Stewart's Background


Dr. Allan Stewart is Director of Aortic Surgery and Medical Director for International Programs for the Mount Sinai Health System, Co-Director of the Valve Center at The Mount Sinai Hospital, and also serves as Associate Professor in the Department of Cardiovascular Surgery at Icahn School of Medicine at Mount Sinai. Dr. Stewart joined Mount Sinai in 2013.

As an experienced cardiac surgeon, Dr. Stewart has performed more than 2,000 combined elective and emergency procedures in his career, including 1,000 heart valve operations. He specializes in the treatment of aortic valve disease through surgical aortic valve repair, aortic reconstruction, aortic valve-sparing surgery, aortic root replacement, and mechanical aortic valve replacement. Additionally, his clinical research focuses on creating and testing novel treatments and technologies for aortic valve repair and patient mechanical circulatory management during complex aortic surgery. He has published approximately 30 peer-reviewed research publications.

As a heart surgeon, Dr. Stewart’s goal is always to develop new ways to treat structural heart disease more minimally invasively, while increasing patient survival, improving patient outcomes, and delivering more long-lasting, durable surgical results while decreasing overall cost. Dr. Stewart pioneered a novel technique in stentless biological aortic root replacement. Also, Dr. Stewart developed a novel hybrid endovascular procedure for minimally invasively performing aortic repair, aortic replacement, and treating complex aortic aneurysms.

Dr. Stewart is a member of the American Association for Thoracic Surgery, Alpha Omega Alpha Honor Medical Society, American Heart Association, New York Society of Thoracic Surgery, Society of Thoracic Surgeons, American College of Surgeons, and National Marfan’s Foundation. Since 2011, Dr. Stewart has been listed by Castle Connolly, Ltd. As one of “America’s Top Doctors” and “Top Doctors: New York Metro Area,” and also as one of New York Magazine’s “Best Doctors.”

Previously, Dr. Stewart served as the Director of the Aortic Surgery Program and attending surgeon at New York-Presbyterian/Columbia and Assistant Professor in the Department of Surgery at Columbia University College of Physicians & Surgeons since 2005. Also, his fellowship training was completed at New York-Presbyterian/Columbia. He completed his internship training at the University of Pennsylvania School of Medicine and his residency training at the Hospital of the University of Pennsylvania. At the University of Medicine & Dentistry of New Jersey (UMDNJ) – Robert Wood Johnson School of Medicine Dr. Stewart received his medical degree. He is board certified in both Thoracic Surgery and Surgery.

In addition, Dr. Stewart is an avid marathon runner and tri-athlete.

Hospital Affiliations
  • Fellowship, 2004
  • NY Presbyterian Columbia University Medical School
  • New York, NY
  • Residency, 2002
  • University of Pennsylvania Health System
  • Philadelphia, PA
  • Medical School, 1995
  • University of Medicine and Dentistry of New Jersey Robert Wood Johnson Medical School
  • Piscataway, NJ