George Giannakoulas runs the Adult Congenital Heart Disease and Pulmonary Hypertension Clinics at the AHEPA University Hospital in Thessaloniki, Greece. He is an Associate Professor in Cardiology at the Aristotle University of Thessaloniki. He is also an Adjunct Associate Professor at the Institute of Bioelectronic Medicine at the Feinstein Institutes for Medical Research. He runs numerous international clinical trials on heart failure and pulmonary hypertension. He has spent most of his professional career in Thessaloniki, with a 2-year fellowship at the Royal Brompton Hospital in London. He is currently the President-Elect of the Working Group on Pulmonary Circulation and Right Ventricular Function of the European Society of Cardiology. His research activities are mainly focused on heart failure, pulmonary hypertension, and congenital heart disease. He has been a reviewer for high-impact journals and serves as an Associate Editor in the Hellenic Journal of Cardiology, the European Journal of Preventive Cardiology, the International Journal of Cardiology Congenital Heart Disease and Reviews in Cardiovascular Medicine. He has 348 publications with 14,754 citations and an h-index of 38 (Scoups, 8 October 2023).