While outdoor and other scenes are filmed in various locations through out the city, most hospital scenes are filmed on a series of sets built on soundstages in the city’s Cinespace Chicago film and TV production facility.
The shows do not have a studio audience and fans are not permitted to visit the sets. However, die hard fans can sometimes catch the show filming on location throughout the city.
This post was last updated September 22, 2018 and, although it was believed to be accurate at that time, this information may have changed since this time. Although reasonable efforts are made to ensure the accuracy of this answer, it cannot be guaranteed and you are encouraged to verify any details independently.