Competency-based medical education (CBME) is a major approach used to establish a blueprint for and strengthen specialty-specific competency training. A key factor for the implementation of CBME is to reach consensus and promote the professional identity of domain experts and faculty. To enhance the understanding of core competencies and milestones as well as promote the professional identity of nationwide radiation therapist experts, a consensus camp for learning milestones was conducted in 2019. After the implementation of a thorough consensus process, we found that participants had an improved understanding of core competencies and milestones and an enhanced professional identity. In addition, after the process, participants demonstrated higher acceptability and feasibility of undergoing specialty training in the future.