Internal Medicine-Pediatrics trained physicians embody the skills, wisdom, and dedication of pediatricians and internists in a single physician. Med-Peds training and practice synthesizes two complex disciplines into a whole greater than the sum of its parts. Capitalizing on the focus, depth, and evidence base incumbent to training in and practicing the two disciplines, Med-Peds physicians bring a unique insight and scope to the care of patients throughout their life span. Caring for multiple generations of the same family lends them intrinsic comprehension of family dynamics, epidemiology and the impact of acute or chronic illness at all ages, all in the context of family systems. Med-Peds physicians draw from the rich repertoire of knowledge and skills of pediatricians and internists to bring great flexibility in their approach to clinical medicine. Increasingly they occupy special niches within the medical community, such as the care of adults with transitional illnesses like cystic fibrosis, diabetes, congenital heart disease, etc.