Gustave Roussy is a non-profit making private health establishment with a public role.
As a Cancer Centre, its status derives from Directive n° 45-2221 of the 1st October 1945, modified by Directive n° 2005-406 of the 2nd May 2005 and by the "HPST" Law of 21st July 2009 on hospital reform with a bearing on patients, health and local authorities.
Gustave Roussy is a member of Unicancer, an organisation to which all French Cancer Centres belong.