Professor Didier Houssin is presently the president of AP-HP International, the subsidiary of Assistance Publique – Hôpitaux de Paris (AP-HP) (Greater Paris University Hospitals).
Professor of surgery and liver transplant specialist at Paris-Descartes University since 1988, Didier Houssin served as head of surgery at Cochin hospital in Paris, then as executive director of the French transplant agency and, later, as medical policy director of Assistance Publique – Hôpitaux de Paris and vice-president of Paris-Descartes University.
From 2005 to 2011, he was director general for health at the French Ministry of health and inter-ministerial delegate for pandemic flu preparedness.
President of the French agency for the evaluation of research and higher education (AERES, then HCERES), from 2011 to 2015, and president of the management board of the French agency for food, environmental and occupational health and safety (ANSES) from 2013 to 2016, he served also as an advisor to the World Health Organization since 2011. From, 2015 to 2022, he was member of the management board of the European Food Safety Authority (EFSA).
At the World Health Organization (WHO), he was chair of the Pandemic Influenza Preparedness Framework Agreement Advisory Group and, later, chair of the Review Committee on the Role of the International Health Regulations (2005) in the Ebola Outbreak and Response. He has chaired the Covid-19 WHO emergency committee since January 2020 and is a member of the French National Academy of Medicine.