John M. Brown, III, M.D. Brook A. Dejene, M.D. Drew P. Greeley, M.D. David L. Johnson, M.D. Christopher J. Magovern, M.D. Richard M. Neibart, M.D. Marek Polomsky, M.D. James P. Slater, M.D. Steve Xydas, M.D. Benjamin A. Youdelman, M.D.
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Cardiac/Cardiovascular and Thoracic Surgery and Medicine for the New Jersey - New York metropolitan tri-state area.

Mid-Atlantic Surgical Associates is the largest volume cardiac surgery group in the New York metropolitan area. Since its foundation in 1984, MASA has performed over 24,000 open heart procedures. Our surgeons perform three times more procedures each year than the national average. MASA has consistently had survival results for coronary artery bypass grafting that have been among the highest in the state of New Jersey and have surpassed the national average.

Award winning cardiac care

Mid-Atlantic Surgical Associates has been awarded the highest rating, “Three Stars” by Consumer Reports in their September 2011 and October 2010 issues, and the highest rating, “Three Stars”, by the Society of Thoracic Surgeons in 2010. > >

Cardiac Classroom

In addition to performing cardiac surgery, Dr. John Brown is also the founder and director of the innovative “Cardiac Classroom”, an award-winning distance learning program for high school students, launched with the Liberty Science Center.
Click here to view Cardiac Classroom
Dr. Chris Magovern named ABC News Medical Contributor

Dr. Chris Magovern has been named as an ABC News Medical Contributor. Dr. Magovern explains heart surgery and demonstrates surgical procedures in this series of videos from ABC News. > >
Cardiac Surgery Brochure

A new PDF brochure titled “Cardiac Surgery” is now available for download from Morristown Medical Center.

Download Brochure > >
Mid-Atlantic Surgical Associates
100 Madison Avenue, Morristown, New Jersey 07960
973-971-7300
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