Since taking the reins of America’s oldest health department in Baltimore, Dr. Leana Wen has been reimagining the role of public health including in violence prevention, addiction treatment, and urban revitalization. Under Dr. Wen’s leadership, the Baltimore City Health Department has launched an ambitious overdose prevention program that is training every resident to save lives, as well as a citywide youth health and wellness plan. She is the author of the book, When Doctors Don’t Listen: How to Avoid Misdiagnoses and Unnecessary Tests, and is regularly featured on National Public Radio, CNN, New York Times, and Washington Post. Her talk on TED.com on transparency in medicine has been viewed nearly 1.5 million times.