He completed his residency in neurological surgery within the Massachusetts General Hospital.

He completed a one-year internship in small animal medicine and surgery at the University of Georgia in 1989.

"Completed my residency in surgery at U.I., walked away from the whole deal right there."

While at Letterman, Jennings completed a residency in general surgery.

He then returned to OSU hospitals and completed his three year residency in general surgery.

Smythe then completed a residency in Cardiothoracic surgery.

Following his residencies, he completed a fellowship in advanced dermatologic surgery at the University of Michigan.

He completed his internship and residency in orthopedic surgery at the Hospital for Joint Diseases.

He completed specialty training in oral surgery and periodontology at the University of Lund.

He completed his training in surgery at Borough hospitals in London and became a qualified surgeon in 1827.