NorthShore University HealthSystem and Edward-Elmhurst Health have finalized the merger of the two systems. The combination of the two organizations results in the creation of the third-largest health system and second-largest physician network in the state of Illinois. Branded as NorthShore – Edward-Elmhurst Health, the new health system brings together 25,000 staff members and 6,000 physicians to serve an area of over 4 million residents across Illinois.