Professor O’Reilly is a Consultant Endocrinologist in Beaumont Hospital, Dublin, and Clinical Associate Professor in the Royal College of Surgeons in Ireland (RCSI). After graduating with honours from National University of Ireland, Galway in 2005, he completed core medical training in Dublin before entering specialist training in Endocrinology, Diabetes Mellitus and General Internal Medicine through the Royal College of Physicians of Ireland.
In 2012, he was awarded a Clinical Research Training Fellowship by the Wellcome Trust in the UK, which funded his doctoral studies into the role of androgen excess in female metabolic dysfunction at the University of Birmingham. He received his PhD from the University of Birmingham in 2015. From 2015-2019 he held the posts of Hoffenberg Clinician Scientist at the University of Birmingham and Honorary Consultant Endocrinologist at University Hospital Birmingham, where he was Lead Clinician for the Adrenal Tumour MDT.
He returned to Dublin to take up his current post in September 2019. His clinical and academic interests encompass adrenal tumours, female androgen excess and Cushing’s syndrome. He is a member of the Clinical Committee of the Society for Endocrinology. Other activities include Convenor of the Adrenal and Cardiovascular Network for the Society for Endocrinology, and Convenor of the Adrenal Strand of the Society for Endocrinology Annual Clinical Endocrine Update. He is the recent recipient of a prestigious Health Research Board of Ireland Emerging Clinician Scientist Award, which will fund his research into the relationship between adrenal androgens, skeletal muscle metabolism and mitochondrial dysfunction in women.