Sinai Health System - Level 1 Trauma Center, is a Chicago-based not-for-profit organization comprised of Sinai's teams of nurses, surgeons, and anesthesiologists working together in surgical services such as vascular, hand, neuro, orthopedics, gynecological, reconstructive, urological & general surgery. About Sinai Health System: The member institutions of Sinai Health System collectively deliver a full range of high-quality outpatient and inpatient services, as well as a large number of innovative community-based health, research, and social service programs.