Xavier Emmanuelli graduated as a doctor of merchant medicine and joined the maritime courier. Then he became a general practitioner at the Coal Basin of the Freyming-Merlebach Mines. At the same time, he became part of the founding team of Médecins Sans Frontières (MSF), with a desire to create an international emergency relief effort. In parallel, from 1972 to 1975, he was the assistant to Professor Pierre Huguenard for the creation and development of SAMU 94, one of the first Emergency Medical Aid Services. As an anesthesiologist and reanimator. From 1992 to 1995 Xavier Emmanuelli was a hospital practitioner at the Care and Accommodation Center at the Nanterre hospital. He described a new clinical approach to social exclusion observed during consultations with the homeless. He then imagined a social SAMU like the medical SAMU in order to take charge of people in situations of exclusion. From 1995 to 1997, he was appointed Secretary of State for Emergency Humanitarian Action by President Jacques Chirac. In 1998, he also founded the Samusocial International, in order to address the high levels of exclusion amongst homeless people in big cities of the world.