The skills and training medical family therapists need to be effective in their work is an underdeveloped area in the literature. Training programs in Medical Family Therapy (MedFT) currently vary in duration, intensity, and focus of material and most of this is due to the minimal research done on what core competencies are needed. The results presented in this paper are the product of a larger modified Delphi (Dalkey in Studies in the quality of life, Lexington Books, Lexinton, MA, 1972) study designed to reach consensus regarding the current definition, scope, and practice of MedFT. Thirty-seven experts in MedFT participated in this two-phase investigation. What resulted and will be reported on in this article are the training requirements and recommended core competencies for the practice of MedFT. Participants indicated that 12 academic course content areas and 13 core competencies should be required of those seeking training in MedFT. Recommendations for MedFT core competencies at the master's, post master's, and doctoral levels, as well as advancements for future research, are described in detail.