is an American surgeon, researcher, educator, and academic administrator.
The Carl and Elizabeth Naumann Dean of Stanford University School of Medicine, his term began in December 2012.
Previously, he was the provost of Johns Hopkins University.
An expert on the inner ear, he is known for identifying the superior canal dehiscence syndrome, a disorder where a hole in the skull bone upsets the inner ear balance canal.
A fellow of the American College of Surgeons and the American Academy of Otolaryngology – Head and Neck Surgery, he is also a member of the National Academy of Medicine.