Mark Anthony Vassallo is a consultant geriatrician working at Karen Grech Hospital and Mater Dei Hospital. His main interests are geriatric rehabilitation, orthogeriatrics and end-of-life care.

Dr Vassallo is the chairperson of the Geriatric Medicine Society of Malta and represents the society on the European Geriatric Medicine Society and secretary of the Geriatric Medicine Section of the European Union Medical Section. He also represents geriatrics on the Specialist Accreditation Committee in Malta