Christian is professor of clinical informatics at the university of Geneva and chairman of the division of medical information sciences at the university hospitals of Geneva. He is a medical doctor board certified in Internal Medicine with special emphasis on emergency medicine, master in public health from the University of Washington, parallel education in biomedical informatics at the University of Geneva, focusing on clinical information systems, clinical data interoperability and medical semantics. Christian played an important role in the Swiss Federal strategy for eHealth and the future federal law for the shared patient record as chair of the standard and architecture and semantics working groups. He is member of the executive board of the Swiss Personalized Health network initiative. One of the focus of his team is on phenotype clinical data interoperability and semantic representation to support research, including a strong lead on computational linguistics and tools to use medical narratives and texts. Christian co-authors more than 150 publications. He is editorial board member of several peer-reviewed journals in biomedical informatics, such as the Journal of the American Medical Informatics Association (JAMIA), PLOS One, Applied Clinical Informatics (ACI) and BMC Big Data Analytics. Christian was vice-chair of the board of directors of HIMSS until 2016. He is the president of the European federation of medical informatics. Christian has participated to several start-ups.