© The Author(s) 2018. Nearly 80% of persons with multiple sclerosis (MS) do not engage in sufficient amounts of exercise for managing symptoms and improving quality of life. We have addressed this problem by developing a systematic line of qualitative research targeting the patient–provider interaction for promotion of exercise within comprehensive MS care. This research resulted in a conceptual model that guides health care providers in promoting exercise among persons with MS. The current study involves a final evaluation of the model based on semistructured interviews with 28 MS health care providers. Providers perceived that the model was a strong conceptualization of practice that reflected the MS illness course and supported exercise behavior change, but more steps were required to translate the model from concept into practice, including improved clarity of the model, and the development of practice models. The evaluation yielded a final conceptual model for exercise promotion in MS through the patient–provider interaction.