This unnamed man was a victim of Doc Benton.
Background[]
This man was jogging when he was kidnapped by Doc Benton. Benton then put him in his cabin, tied him up and then when he woke up, he was tied to the table. Benton then opened his rib cage with surgical instruments and then removed his heart in front of the horrified eyes of the jogger.
His body with his ribcage cut open is later discovered by Sam Winchester when he enters Doc Benton's cabin before discovering a female victim with worms on her right arm.