This position paper intends to trigger a debate on the engagement of the design research community with healthcare systems. We analyse the specificities of healthcare systems design and of healthcare organisations. We discuss the focus on evaluation and the evidence-based paradigm in healthcare, and argue that design research currently is ill-prepared to meet such expectations. Dedicated research attention in healthcare seems necessary to bridge this gap. It could enrich design research through multidisciplinary collaborations, and enable design to make a precious contribution to healthcare.