Graduating with his medical degree from New York Medical College in 1981, Dr. Fleisher completed his surgical internship and residency at St. Luke’s/Roosevelt Hospital in New York City where he served as chief resident. He completed is fellowship in cardiovascular and thoracic surgery at the University of British Columbia before returning to St. Luke’s as an Assistant Attending Surgeon in 1989.

Since 1990, Dr. Fleisher has held the position of Attending Surgeon in the Cardiovascular and Thoracic Surgery sections of the Department of Surgery at Westchester Medical Center.

In addition to his two decades of clinical service, he has also held esteemed academic positions, including that of Visiting Clinical Fellow at Columbia University’s College of Physicians and Surgeons from 1981 to 1986, and his current position as Associate Professor of Surgery at New York Medical College. Dr. Fleisher is currently the President and Medical Director of Premier Vein Centers of Westchester.

Dr. Fleisher is a Diplomate of the American College of Phlebology (the premier association for physicians and allied health professionals working in the field of phlebology), and has earned both RPVI (Registered Physicians in Vascular Interpretation) and RVT (Registered Vascular Technician) certifications awarded by the American Registry for Diagnostic Medical Sonography (ARDMS). These ARDMS credentials represent the highest level of competence in the medical-imaging modality of sonography (ultrasound) testing in the field of phlebology.

Contributing to the advancement of medical science in addition to outstanding clinical service, Dr. Fleisher has also published over two dozen peer-reviewed articles and presented numerous papers at national meetings.
Dr. Fleisher is a member of numerous county, state and national health organizations and has been recognized by the American Lung Association of Westchester with the Sir William Osler, MD Humanitarian Award in 2004. A passionate philanthropist, he tirelessly supports many local and national charities. In 2003, he created the “Mend a Broken Heart Foundation” to support pediatric heart surgery patients.