Ger Janssen has a PhD in Applied Physics from Eindhoven University of Technology in the Netherlands. He joined Philips in 2001 and in all his responsibilities in the company computational modelling is a recurring theme, in which he has now over 20 years of experience. He is currently head of the Digital Twin department in Philips Research and since 2018 also Program Manager Patient Digital Twin. In these roles he is shaping the digital twin activities of Philips from R&D to operational and clinical space. For these activities the guiding principle is that all Philips solutions should address the quadruple aim: better health outcome, better patient and staff satisfaction against lower costs.