The goal of this article is to present the characteristics and challenges of the participatory design (PD) process in healthcare, in connection with an evaluation of the PD process in the People and Medicine Foundation’s project – Patients4Patients. The main objective was to design and implement a new module in the Patients4Patients mobile app. The evaluation tried to answer the questions of (1) to what degree the proposed participatory process aligned with participatory design principles, and (2) to what degree the participants felt empowered and engaged in the designing and decision-making process. The results suggest that the implementation of PD was successful. At the same time, new aspects were revealed that have not been widely discussed in the literature on successful PD projects in e-healthcare, namely digital and conditional accessibility, and the importance of the group process