Morgan, John, 1735–89, American physician, b. Philadelphia, grad. College of Philadelphia (now Univ. of Pennsylvania), 1751. He founded, in Philadelphia (1765), the first medical school in the United States. In 1775 he became director-general and physician in chief to the general hospital of the Continental Army. Blamed for a high mortality rate in the hospital, he was removed (1777) by Congress, which later exonerated him. His writings include A Discourse on the Introduction of Medical Schools in America (1765).