For decades, cop shows and medical dramas have reaped the benefits of spinoffs and crossovers. Look no further than Dick Wolf for creators who know how to make shared universes work on television. With “Law & Order,” which debuted in 1990 and has since spawned countless popular spinoffs, he established a television juggernaut. In recent years, Wolf has focused on the “One Chicago” franchise, which he created alongside Derek Haas and Michael Brandt.
The shows that make up the “One Chicago” brand in its present iteration include “Chicago Fire,” “Chicago Med,” “Chicago P.D.”, and the short-lived “Chicago Justice.” While each show has its own distinct personality, the writers have taken advantage of the show’s crossover potential on several occasions. Some “Chicago Fire” actors, for example, have featured in multiple episodes of “Chicago Med” over the years. But who from the medical drama has been in the most firefighting episodes?
Nick Gehlfuss is the Chicago Fire actor who has featured in the most episodes.
According to IMDb, Nick Gehlfuss, who plays Dr. Will Halstead, an attending physician in the “One Chicago” franchise, is the “Chicago Med” actor who appears in the most episodes of “Chicago Fire,” with 20 to his credit as of this writing. Over the course of the seasons, Halstead goes through a lot, including losing his job after claiming responsibility for the crime of a coworker. Yaya DaCosta, who plays April Sexton in the series, ranks second with 12 guest starring roles (per IMDb).
In 2015, Gehlfuss’ character debuted in the “One Chicago” franchise and has since been a regular. He makes his first appearance on “Chicago Fire” in the Season 3 episode “I Am the Apocalypse,” which serves as a backdoor pilot for the “Chicago Med” spinoff. “A Couple Hundred Degrees” from Season 9 is his most recent appearance. In addition, between 2015 and 2020, the “Chicago Med” alumnus appeared in 17 episodes of “Chicago P.D.”