He was a Chairman ofthe Hellenic Atherosclerosis Society during 2010-2012 and Vice Chairman during 2008-2010. Currently, he is a Vice Chairman of the Greek Chapter of American Society of Angiology, Fellow of the European Society of Cardiology and American Society of Clinical and Laboratory Scientists. He served as an Advisor for Canadian Institutes of Health Research in 2006, Irish Health Research Board and also for Diabetes UK in 2007.