Dr. Jonathan D. Marmur

Interventional Cardiology

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Primary Contacts

SUNY Downstate Medical Center
450 Clarkson Avenue
Room A2-523 (cardiac cath lab)
Brooklyn, NY 11203-2098
Cell: 917-885-8854 more contact information

Cardiology, Clinical Practice

Dr. Marmur is a high-volume angioplasty operator with expertise in all forms of percutaneous coronary intervention. He focuses on achieving ideal angiographic results with the lowest possible rate of complications.

Dr. Marmur's outcomes are included in the New York State PCI Reports.

He is also one of the first New York cardiologists to correct adult atrial septal defects (ASD) and patent foramen ovale (PFO) using minimally invasive technologies.

  Minimally Invasive Cardiac Procedures Research

Heart disease is the number one cause of death in both men and women. Cardiovascular disease is frequently treated using catheterization procedures that minimize incisions, blood loss and length of hospital stays.

Coronary arterial angioplasty techniques are used to treat arteriolosclerosis, hardening of the coronary arteries. The most common procedures are coronary and peripheral arterial stenting. However, when arteries are blocked by calcified plaque, rotational atherectomy (rotablator) may be required.


In addition to treating arterial disease, catheterization procedures can now be used to repair atrial septal defects (ASD) in adults. This congenital heart disorder is characterized by a hole in the muscular wall that divides the upper chamber of the heart.

The same techniques can be used to close patent foramen ovale (PFO). The foramen ovale is a normal opening between the left and right atria in newborns that usually closes in the first few months of life. A PFO occurs when this opening does not seal.


A recognized expert in coagulation, Dr. Marmur contributes to the basic science and clinical literature on hemostasis and thrombosis.

He has also contributed substantially to the areas of gene therapy and biomarkers in cardiovascular disease.

Copyright 2006 © Dr. Jonathan D. Marmur. All rights reserved.