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The Chicago Med Star You Might Have Missed In An Episode Of Blue Bloods

Following an Irish Catholic family of law enforcement officers, "Blue Bloods" stars Donnie Wahlberg, Bridget Moynahan, Will Estes, Len Cariou, and Tom Selleck. Currently in Season 12, "Blue Bloods" has a procedural style format that sees self-contained episodes about a certain victim or crime that often gets resolved in the episode it is introduced in, and the Reagan family of cops have their trademark Sunday dinner where they discuss relationships and current events.

Sometimes, there are overarching storylines that are threaded through the season, like the current plot involving potentially corrupt district attorneys. Considering the format of the show, there are plenty of opportunities for special guests and actors from different shows to lend their talents. Just in Season 12, we've seen Jimmy Buffett, Lyle Lovett, and Callie Thorne act as a con artist, a Texas Ranger, and a psychic medium, respectively. However, which actor from "Chicago Med" has also appeared on the hit television show "Blue Bloods"?

Nick Gehlfuss had an uncredited role on Blue Bloods

In a 2011 "Blue Bloods" episode called "Thanksgiving," Nick Gehlfuss appears as Jimmy the Bookie in an uncredited role (via IMDb). The episode itself is a whirlwind of emotions: It sees a girl fall and die from her apartment, Henry Reagan (Len Cariou) suffer a stroke and end up in the hospital, and Anthony Renzulli (Nicholas Turturro) attempt to get his gambling addiction under control, which leads to Gehlfuss' role as someone who is rather keen on debts and wagers.

Gehlfuss had roles in several other procedural shows, including "Person of Interest," "The Glades," and "Rizzoli & Isles," before getting his big break on Showtime's rambunctious series "Shameless," which eventually led to his tenure on "Chicago Med" as Dr. Will Halstead (via EW). Fans of the "One Chicago" franchise may recognize the last name Halstead — the doctor is the brother of one of the main characters on "Chicago P.D." and has appeared on not only that show but also "Chicago Fire." Generally, it seems that viewers have been seeing Gehlfuss pop up long before his starring role as one of the prolific Halstead family members on "Chicago Med."