This study aims to provide theoretical and practical implications for the development of effective medical training programs by analyzing a case of the medical communication training program based on Andragogy s course model in order to improve patient-centered communication competencies. The medical communication program selected for this study was analyzed in eight stages: preparing learners - creating a learning atmosphere - planning - need assessment - goal establishment - design of learning plans - assessment and need re-assessment. Specifically, the first phase was to make learners enhance the course expectations and preparation by providing the curriculum information and conducting self-diagnosis of communication skills as a pre-test. Second, in the phase of the learning atmosphere creation, a favorable learning environment, such as setting a small number of learning groups and the use of simulated patients in the training course, was designed. Third, in the planning phase, learners who had communication experiences with various patients involved in the case/scenario development processes as a co-developer. Fourth, in the need assessment phase, learners training needs were analyzed and reflected into the course contents. Fifth, the goal of training course, reducing work stress created by miscommunication with patients and improving patient-centered communication skills, was established based on the learners training needs. Sixth, in the phase of learning plan design, educational tools that improve adult learners learning experience such as role-play, discussion, and feedback were designed. Seventh, in the learning activity phase, facilitators played an important role in encouraging learners actively participate in the course. Eighth, the phase of assessment and need re-assessment involved evaluations of the extent to which leaners changed their perceptions and behaviors of the communication through the participation in the communication program. Based on the results of this study, the theoretical and practical implications of the study were discussed.