Saint Vincent Catholic Medical Centers has named Arthur Y. Webb as COO of the Manhattan-based healthcare system. In his new position, Webb will have operational responsibility for the system's flagship St. Vincent's Hospital Manhattan, St. Vincent's Hospital Westchester, a behavioral health hospital in Westchester County, and continuing care services that include two skilled nursing facilities in Brooklyn, another on Staten Island, a hospice, and a home health agency serving the metropolitan New York area. Saint Vincent's behavioral health services also provide supportive housing programs for people with mental illness throughout the metropolitan area.