Leana Sheryle Wen (born January 27, 1983), is a physician, public health advocate, and the health commissioner of Baltimore City, Maryland, USA. She is the author of the book When Doctors Don’t Listen: How to Avoid Misdiagnoses and Unnecessary Tests.<ref name=wenlisten/Wen previously practiced as an emergency physician at the George Washington University, where she served as a professor in the School of Medicine & Health Sciences and professor in health policy at the Milken Institute School of Public Health. Prior to this, she was an emergency physician at Brigham and Womens Hospital and Massachusetts General Hospital, where she was on the faculty of Harvard Medical School. She also served as the national president of the American Medical Student Association and the American Academy of Emergency Medicine/Resident and Student Association.
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