Photo of Marc Jay Semigran, MD

Semigran, Marc Jay, MD

  • Medical Director of the Mass General Heart Failure and Cardiac Transplant Program


Accepting New Patients: Call for Availability


Marc Jay Semigran, MD, is Medical Director of the Heart Failure and Cardiac Transplant Program at the Massachusetts General Hospital Heart Center.



Centers & Specialties

Heart Center

Transplant Center

Clinical Interests
  • Heart failure
  • Pulmonary hypertension
  • Heart transplant
Medical Education
  • MD, Harvard Medical School
  • Residency, Massachusetts General Hospital
  • Fellowship, Massachusetts General Hospital
Board Certifications
  • Cardiovascular Disease
  • Internal Medicine
  • Advanced Heart Failure and Transplant Cardiology
  • Boston: Massachusetts General Hospital
Insurances Accepted
  • MassHealth
  • Medicare
  • Medicare - ACD
  • OSW - Connecticut
  • OSW - Maine
  • OSW - New Hampshire
  • OSW - Rhode Island
  • OSW - Vermont
  • Railroad Medicare
  • Railroad Medicare - ACD

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.

Patient Age Group

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Dr. Semigran is a graduate of the Harvard/MIT Health Sciences and Technology Program and completed Internal Medicine Residency and Cardiology Fellowship Training at Massachusetts General Hospital.He is Medical Director of the MGH Heart Failure and Cardiac Transplant Program and conducts clinical and translational research targeting novel approaches to heart failure.

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Research & Publications


Hemodynamic effects of inhaled nitric oxide in RV myocardial infarction and cardiogenic shock. J Am Coll Cardiol. 2004;44:793-8.

Hemodynamic effects of sildenafil in patients with CHF and pulmonary hypertension: combined administration with inhaled nitric oxide. Chest. 2005;127:1647-53.

Combined administration of intravenous dipyridamole and inhaled nitric oxide to assess reversibility of pulmonary arterial hypertension in potential cardiac transplant recipients. J Heart Lung Transplant. 2005;24:1950-6.

Sildenafil improves coronary artery patency in a canine model of platelet-mediated cyclic coronary occlusion after thrombolysis. J Am Coll Cardiol. 2006;47:1471-7.

Sildenafil improves exercise hemodynamics and oxygen uptake in patients with systolic heart failure. Circulation. 2007;115:59-66.

Sildenafil improves exercise capacity and quality of life in patients with systolic heart failure and secondary pulmonary hypertension. Circulation. 2007;116:1555-62.

Determinants of ventilatory efficiency in heart failure: the role of right ventricular performance and pulmonary vascular tone. Circ Heart Fail. 2008;1:227-233.

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News & Events

  • The journey home

    Lacy Neff, a radio broadcaster from West Virginia, recently underwent a heart transplant as part of his treatment plan for amyloidosis, a rare disease that occurs when amyloid proteins accumulate in the organs. The MGH is one of only seven hospitals in the United States studying cardiac amyloid transplants – and the only one in the Northeast.

  • A life-saving gift

    MGH Hotline 4.2.10 IN THE UNITED STATES ALONE, there are more than 100,000 candidates on the United Network for Organ Sharing organ and tissue waiting list.

  • A heartwarming wedding on Ellison 10

    MGH Hotline 1.15.10 It's not often one encounters a touching love story within the four walls of the hospital.


Heart Failure and Cardiac Transplant Center
55 Fruit Street
Boston MA, 02114-2696
Phone: 617-726-8862
Fax: 617-726-4105

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