Gurpreet Dhaliwal, MD, is a clinician-educator and associate professor of clinical medicine at the University of California, San Francisco. He studies how doctors think – how they diagnose, how they make treatment decisions, and how they develop expertise. Considered one of the most skillful diagnosticians and clinician-educators in the U.S. today, he regularly mesmerizes audiences of hundreds of medical professionals as he correctly diagnoses cases meant to stump participants.