About Ioannis Mastoris, MD

Dr. Mastoris is originally from Greece and graduated from the University of Athens Medical School. He moved to New York City to work at the Icahn School of Medicine at Mount Sinai in interventional cardiology and obtained permanent residency through the exceptional ability pathway in research. He pursued his internal medicine training at Albert Einstein College of Medicine/Jacobi Medical Center and cardiology/advanced heart failure at the University of Kansas Medical Center. He has been selected to serve as a member of the ACCEL FIT Editorial Board. He joined the MGH faculty in September 2022.

He is pursuing a master’s in public health (MPH) at Johns Hopkins Bloomberg School of Public Health. He has authored >30 original publications during his training focused on advanced heart failure and predicting myocardial recovery and device hemocompatibility with various forms of mechanical circulatory support. His research interests include rest and exercise hemodynamics, hemodynamic profiling in mechanical circulatory support, and remote patient monitoring. 

Dr. Mastoris specializes in the care of patients with early and advanced heart disease. He employs the latest evidence-based therapies in the care of his patients through a multidisciplinary approach including other cardiac specialties. 

Linkedin profile: https://www.linkedin.com/in/ioannis-mastoris-md-facc-300b2168/

Twitter profile: https://twitter.com/mastorismd

Clinical Interests:




Massachusetts General Hospital
55 Fruit St.
Boston, MA 02114
Phone: 866-644-8910

Medical Education

  • MD, University of Athens School Of Medicine, Greece
  • Residency, Albert Einstein College of Medicine
  • Fellowship, Kansas University School of Medicine
  • Fellowship, Kansas University School of Medicine

American Board Certifications

  • Advanced Heart Failure and Transplant Cardiology, American Board of Internal Medicine
  • Cardiovascular Disease, American Board of Internal Medicine
  • Internal Medicine, American Board of Internal Medicine

Accepted Insurance Plans

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