The NYPD identified him as Henry Bello, a former family doctor at the hospital, who sources said was bent on revenge after being fired for harassment two years ago.
Bello, 45, was found on the 17th floor, dead of a self-inflicted gunshot wound, with an M-16-type rifle with the gun nearby, NYPD Commissioner James O'Neil.
He had apparently tried to set himself on fire, as well, O'Neil said.
The body of a female doctor was found near Bello's body, O'Neill said. Both she and Bello were pronounced dead at the scene, he said.
At least two of the wounded were also doctors, the commissioner said.
The shootings began at 2:45 p.m. on the 16th and 17th floors of the nonprofit hospital at 173rd Street and Grand Concourse.
Bello apparently used a rifle that he had hidden under a lab coat. He was carrying ID, the NYPD said.
Hospital doctors and other personnel refused evacuation orders to stay and assist the wounded throughout the incident, Aaron Katersky of ABCNewsRadio reported.
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