We also need a commissioner who isn’t shy about seeing the department’s mandate expansively. Baltimore’s health department has the analytical expertise, the institutional habit of looking at old problems in new ways, and the programmatic experience to help in a wide variety of areas. Baltimore’s zoning code update a few years ago might have seemed outside the health department’s lane, but Dr. Wen’s predecessor, Dr. Oxiris Barbot, made a strong public health case for changes to limit the number of liquor stores in residential neighborhoods. Similarly, the struggles of students in the classroom may seem outside of the department’s purview, but Dr. Wen, in partnership with Johns Hopkins University, was nonetheless able to make a tremendous difference in the Baltimore school system by arranging in-school eye exams and free glasses. Under her leadership, the department went further than a public health traditionalist might in terms of pulling hospitals into the opioid epidemic fight, but it was necessary — and largely welcomed here.