The Department of Health and Human Services has hired David Geier to conduct [a critical study with a goal of establishing links between vaccines and autism] …. Geier and his father, Mark Geier, have published papers claiming vaccines increase the risk of autism, a theory that has been studied for decades and scientifically debunked. …  David Geier was disciplined by Maryland regulators more than a decade ago for practicing medicine without a license [Geier has an undergraduate degree from the University of Maryland at Baltimore County.]  He is listed as a data analyst in the HHS employee directory.