Davidson , 44 , was the director of endovascular cardiac surgery at the hospital and an assistant professor at Harvard Medical School , according to the hospital 's website . The doctor , Stephen Pasceri , died evening late Tuesday . His wife is pregnant , and they had 2 children ages 9 , 7 and three . Police have identified the gunman as 55-year-old Stephen Pasceri .
The doctor , Stephen Pasceri , died evening late Tuesday . His wife is pregnant , and they had 2 children ages 9 , 7 and three . Police have identified the gunman as 55-year-old Stephen Pasceri .