Taro Shimizu, MD, PhD, MSc, MPH, MBA, FACP is a Professor at the Department of Diagnostic and Generalist Medicine of Dokkyo Medical University in Japan. Dr. Shimizu is considered one of the most highly skilled diagnosticians renowned for his expertise in Japan. Dr. Shimizu has dedicated himself to patients with many diagnostically challenging situations. He has also contributed to the education of young physicians by accepting case challenges as an invited discussant more than 100 times annually at many teaching hospitals across Japan and abroad over 10 years. He has been pioneering research on formalizing the physicians’ diagnostic thinking process (collectively called Diagnostic Strategy) and has published books as a single author as well as over 150 peer-reviewed publications regarding diagnosis. He leads Japan’s diagnostic excellence as the head of the Japanese Diagnostic Excellence team (JDX). In February 2023, he organized and chaired the first Diagnostic Excellence conference in Japan, which gathered 1,400+ attendees.