A former faculty member at the Mount Sinai School of Medicine who had been fired shot the school’s dean outside a popular deli in Chappaqua, N.Y., on Monday, apparently in an act of revenge, the authorities said.

The former employee, Hengjun Chao, 49, of Tuckahoe, N.Y., was charged with attempted second-degree murder after he allegedly fired a shotgun and hit two men around 7 a.m. outside the deli, Lange’s Little Store, about a mile from the home of Bill and Hillary Clinton in the New York City suburb.

Both men were taken to Westchester Medical Center and treated for injuries that were not life-threatening, the police said.

Mount Sinai officials confirmed that the dean, Dr. Dennis S. Charney, 65, of Chappaqua, was one of the victims. The name of the other victim was not released.