Dr. Chesney

Dr. Chesney is a doctor who was an expert in the use of bovine valves instead of porcine valves.

Consulting on Devo Friedman
Because Burke had never transplanted a bovine mitral valve before, he set up a video conference with Dr. Chesney to get his assistance.

Career
He is a cardiothoracic surgeon who was an expert in the use of bovine valves instead of porcine valves. He assisted Dr. Burke the first time he performed the procedure.