Skylar Astin — late of “Pitch Perfect,” and recently a star of “Zoey’s Extraordinary Playlist” — has joined the cast of “Grey’s Anatomy” in a recurring role. His arc will begin later this month, in the March 24 episode titled “Put the Squeeze on Me.”

According to representatives from ABC, Astin will play Todd Eames, and they provided a logline for the character: “Charming and handsome with a gentle soul, Eames holds a PhD in environmental sciences and loves a good spreadsheet. He is close with his sister, who is a pregnant patient at Grey Sloan Memorial.” Will he be a potential love...