Dennis Brown, PhD, joined the APS staff in July 2019 as the Society’s first-ever chief science officer (CSO). In this role, he will serve as the Society’s primary scientific spokesperson and advocate, overseeing the science policy, scientific meetings and education and member communities departments.  He currently serves as professor of medicine at Harvard Medical School and director of the Massachusetts General Hospital (MGH) Program in Membrane Biology. He is also the associate director of the MGH Center for Systems Biology and director of the MGH Office for Research Career Development (ORCD). Brown has held key leadership positions at APS, including serving as the Society’s 90th president. He will split his time between APS headquarters in Rockville, Md., and Boston, where he will retain his affiliation with both Harvard and MGH.