Benjamin Waterhouse (March 4, 1754, Newport, Rhode Island – October 2, 1846, Cambridge, Massachusetts) was a physician, co-founder and professor of Harvard Medical School. He is most well known for being the first doctor to test the smallpox vaccine in the United States, which he carried out on his own family.
Waterhouse was born into a Quaker family, although he never adopted the religion as his own. His parents were Timothy Waterhouse, a chair maker who also served on the Governor's Council, and Hannah Waterhouse. His medical career began at age 16, when he apprenticed for a doctor in his hometown. At age 21, he left the United States to study medicine in Europe at several notable institutions, such as with Dr. John Fothergill in London, England. He was also educated in Edinburgh at the University of Edinburgh Medical School. He matriculated Oct. 28, 1778 at the Leiden University and received at the same University his medical degree Apr. 19, 1780. The title description of his thesis is: Dissertatio medica De sympathia partium corporis humani, ejusque, in explicandis et curandis morbis necessaria consideratione ... - Lugduni Batavorum : Th. Koet, 1780. - 38 p. ; 25 cm. His thesis is dedicated to John Fothergill, M.D., "inspirer of my studies." While living in Holland, he roomed with future U.S. president John Adams.
After returning to the United States in 1782, Waterhouse joined the faculty of the new medical school at Harvard as one of three professors, including John Warren and Aaron Dexter, in the area of Theory and Practice of Physic. He was also elected that same year as a Fellow at Rhode Island College (now "Brown University"). He was elected a Fellow of the American Academy of Arts and Sciences in 1795. In 1814, Waterhouse resigned his Harvard professorship after opposing a plan to establish the Medical School in Boston and attempting to found a rival medical school.