He's accused of assaulting the 15-year old at about 10 a.m. March 1st in a subway stairwell at West 96th Street and Central Park West.
As the girl entered, she was approached by the suspect who demanded her personal property.
Police say he then assaulted her and fled on foot with one dollar from the victim's jacket.
Anyone with information is asked to call Crime Stoppers at (800) 577-TIPS (8477). The public can also submit their tips by logging onto Crime Stoppers' website at http://www.nypdcrimestoppers.com or by texting their tips to CRIMES (274637), then enter TIP577.