Video shows the attack, which happened on Monday, June 6, at 8:10 p.m. near Riverside Drive and West 79th Street.
Police say the attacker punched the 29-year-old parks department employee in the face before taking off on a scooter.
The victim suffered a cut to his face and was treated at the scene by EMS.
Anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
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