Causal loop diagrams are used to map relationships between nodes in a system. They can either contain reinforcing loops, where an action produces a result which influences more of the same action, resulting in growth or decline or balancing loops attempting to move some current state to a desired state through some action. Service design as a practice has focused on the experience of a service journey and on improving said experiences. At the same time, service design has claimed to have systemic impact. Company X, name withheld, is a European health start–up that locates medical specialist for the treatment of serious and life-threatening conditions for patients and their individual health problems.  Company X uses a data–driven approach based on the aggregated matching of qualitative data from the healthcare system together with the company’s own analysis  of patient cases, relating diagnosis with the outcome of procedures to draw patterns that help find the most suitable medical specialists for the case at hand. In this chapter, we discuss how company X combines service design practices and causal loop diagrams in order to innovate within the health market. The process will be described within the chapter as well as the business case and the lessons learnt from applying a more systemic approach to the innovation process.