Leonid Mandel, MD, FACC

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Get to know Cardiologist Dr. Leonid Mandel, who serves patients in Morristown, New Jersey.

Fluent in both English and Russian, Dr. Mandel is a board-certified cardiologist whose professional interests are focused on all aspects of general cardiology, including cardiac intervention. In addition to his affiliation with Morristown Medical Center, he practices at Cardiology Associates of Morristown, LLC in Morristown, New Jersey.

The experienced physicians at Cardiology Associates of Morristown are among New Jersey’s most highly credentialed and respected cardiologists. Together, they offer a superior level of service, integrating state-of-the-art techniques with proven traditional treatments. Most importantly, they genuinely listen to patients’ concerns and provide personalized attention to their specific needs.

Born in the Soviet Union and growing up in Queens, New York, Dr. Mandel graduated from Hofstra University with a Bachelor of Arts degree in Philosophy and a minor in Biology. He attended Ross University School of Medicine, where he was on the Dean’s List throughout his tenure. He was recognized with a Distinguished Scholar award, subsequently receiving his medical degree with highest honors.

Thereafter, he completed his internship and residency in internal medicine at the University of Connecticut School of Medicine and Dentistry. He stayed on as an Assistant Professor of Medicine on the clinical educator track, while simultaneously completing a fellowship in advanced heart failure management at St. Francis Hospital in Hartford. He served as a Fellow in Cardiology at Jefferson Medical College at Christiana Care Medical Center in Newark, Delaware, and obtained additional expertise in interventional cardiology by completing a fellowship there.  

A Fellow of the American College of Cardiology, the doctor is board-certified in both internal medicine and cardiovascular disease by the American Board of Internal Medicine, which is a physician-led, non-profit, independent evaluation organization driven by doctors who want to achieve higher standards for better care in a rapidly changing world. He also holds board certifications in echocardiography and nuclear cardiology.

Among his various achievements, Dr. Mandel has authored a book chapter and has had papers published in peer-reviewed medical journals. His passion for medical education was recognized by the cardiology fellowship at Morristown Medical Center with a Teacher of the Year Award as an outstanding educator and mentor in 2018. 

Cardiology is a branch of medicine that deals with the disorders of the heart, as well as some parts of the circulatory system. The field includes medical diagnosis and treatment of congenital heart defects, coronary artery disease, heart failure, valvular heart disease, and electrophysiology. Cardiologists are doctors who diagnose, assess, and treat patients with diseases and defects of the heart and blood vessels (the cardiovascular system).

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