After completing the four years of medical school required of all osteopaths, and a one-year post-graduate hospital medical internship, he spent two additional years receiving residency specialty training in osteopathic manipulation at St. Barnabus Hospital in the Bronx, N.Y., treating both inpatients—including patients on the medical floors, ICU, maternity ward, and the newborns in the nursery—and outpatients in the on-campus clinic. Dr. Tieri also spent many months training with osteopathic practitioners one-on-one in their private practices, as the practice of hands-on osteopathy is a subtle art, handed down from generation to generation, best learned in an apprentice-type setting.