Communities of practice (CoPs) impact different actors in different ways. Because using a singular approach would not do justice to the complexity that surrounds CoPs, a multi-disciplinary and pluralistic approach is used here to develop a model for measuring the impact CoPs may have on individuals, groups and the organisations in which they are situated. A review of the literature showed no such comprehensive model. In fact, empirical work on CoPs, in general, is scarce and evaluations of them are underdeveloped. Most assessments are look at process alone, or try to link output to anecdotal evidence. I try to fill this gap by presenting a multi-disciplinary conceptual model that approaches measuring certain types of impact a CoP has on individuals and groups that are functioning as CoPs. I also make a theoretical link to how CoPs may contribute to organisational capability.