Dr. Callahan specializes in movement and performance enhancement for an active population. He is the only health care professional in a 150 mile radius to be certified by the Titelist Performance Institute as a TPI medical professional. He has extensive training in evaluating golfers and other rotational athletes for sports based injuries, but he specializes in evaluating and treating dysfunction before it leads to injury. He has a unique, whole body approach to evaluating and treating rotational athletes, but he has also recognized that there is a tremendous carry over to everyday life. He likes to say, "Life is a rotational sport" after noticing that many of his new patients came in after initially injuring themselves doing some form of rotation, such as lifting an ice chest out of a boat or putting a baby in a car seat.