The problem of online doctoral student attrition has led institutions to explore solutions to support student completion. According to Tinto's model of institutional departure, learners' social and academic integration must be addressed to increase retention. At online institutions, learners' social integration can be challenging because of fewer personal interactions. Learning centers are in a unique position to create online peer mentoring programs to foster learners' social integration by offering opportunities to build community through social media and virtual events. In this article, the authors provide an overview of how such a program has been developed, implemented, and assessed.