Dr Peter Greally graduated from UCD in 1984, began practicing in Paediatrics in 1985 and has trained in Dublin, London and Pittsburgh. He is a Senior Lecturer in Paediatrics in Trinity College Dublin and a Consultant Paediatrician since 1994, specialising in Children's Respiratory, Sleep and Allergic Disorders.
He works in Dublin at the National Children's Hospital, Our Lady's Hospital for Sick Children and a private practice at the Charlemont Clinic. He currently is a member of numerous boards including Cystic Fibrosis Registry of Ireland, Irish Thoracic Society and a founder member of the Paediatric subgroup ITX. He lives in Dublin with his wife and three sons.