Last January, Dr. Leana S. Wen took the reins from Dr. Oxiris Barbot as Baltimore City Health Commissioner.  Being responsible for the health of the entire city seems like a gargantuan charge, especially for someone barely 30. But given Wen’s accomplishments to date—she entered college at 13, studied public health and health policy as a Rhodes Scholar at the University of Oxford, served on an advisory commission to Congress regarding graduate medical education, worked as an attending physician in a busy emergency room, gave four popular TED and TEDMed talks, wrote a critically-acclaimed book When Doctor’s Don’t Listen: How to Avoid Misdiagnoses and Unnecessary Tests, to name a few—she’s probably up to the task.