The incident happened around 10:30 p.m. on Tuesday, August 6, on Valentine Avenue in Bedford Park.
Police say the suspect approached the male victim and discharged a firearm, striking the victim once in the left hand and once in the right thigh before fleeing the scene.
The victim was treated and released from Jacobi Hospital.
The suspect was last seen wearing a red hat, white shirt and blue shorts.
Anyone with information in regards to this incident is asked to call Crime Stoppers at 1-800-577-TIPS (8477).