Kourosh Asgarian, D.O. John M. Brown, III, M.D. Paul G. Burns, M.D. Brook A. Dejene, M.D. David L. Johnson, M.D. Christopher J. Magovern, M.D. Richard M. Neibart, M.D. Ronald E. Ross, M.D. Nicholas J. Shea, M.D.Sinan Simsir, M.D. James P. Slater, M.D. Benjamin S. van Boxtel, M.D.
Coronary Artery Bypass Grafting Aortic Valve Surgery Aortic Surgery Mitral Valve Surgery Maze Procedure Ventricular Assist Device Therapy Pacemaker and Defibrillator Surgery
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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.

Mid-Atlantic Surgical Associates has been awarded the highest rating, “Better Than Expected” by Consumer Reports in their June 2018 issue. > >
Dr. Magovern and Dr. Brown, Two Morristown Memorial Hospital - Affiliated Cardiac Surgeons, Top New Jersey State Rankings

Dr. Christopher J. Magovern and Dr. John Brown, two cardiac surgeons affiliated with Morristown Medical Center (an Atlantic Health System hospital), topped New Jersey state rankings for two major categories of cardiac procedures.

Dr. Magovern performed 380 coronary bypass surgeries, the most of any physician in New Jersey, based on an analysis of Inpatient Medicare claims over a five year period from 2013 to 2017. Research has shown that physician case volume is positively associated with better quality outcomes.

Dr. Brown performed the most inpatient cardiac valve and cardiothoracic procedures of any physician in New Jersey, based on an analysis of Inpatient Medicare claims over a five year period from 2013 to 2017. Dr. Brown performed 674 such procedures as attending physician and 823 as operating physician, #1 in New Jersey in both categories.
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
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