Onassis Cardiac Surgery Center

The Onassis Cardiac Surgery Center (OCSC) is a premier specialized hospital located in Athens, Greece, dedicated exclusively to cardiovascular health. Established in 1992 through a donation from the Alexander S. Onassis Public Benefit Foundation, it serves as a center of excellence for adult and pediatric cardiac surgery and cardiology. The center is internationally recognized for its advanced programs in heart and lung transplantation, mechanical circulatory support, and complex electrophysiology. OCSC was the first hospital in Greece to be accredited by the Joint Commission International (JCI), underscoring its commitment to high standards of patient safety and clinical care. Beyond clinical services, the institution functions as a significant research and educational hub, collaborating with global academic entities to advance cardiovascular medicine.