The incident happened on Friday, February 4 at 6:14 p.m. at the East Broadway subway station in Chinatown.
The 39-year-old woman, identified as Sabrina Scott, was found to have cuts on her head from falling onto the northbound F line subway tracks.
The man, who allegedly punched her in the head, was having an argument with a 43-year-old man.
The victim was taken to Bellevue Hospital in stable condition.
The suspect is described as a light skinned Hispanic man, age 35-40, standing 6 feet tall and weighing 200 pounds. He was last seen wearing blue jeans and a tan sweater.
He was clean shaven with a pock-marked face and a shaved head
Anyone with information in regards to this incident is asked to call Crime Stoppers at 1-800-577-TIPS (8477).
You can also submit your tips by logging onto the Crime Stoppers website at WWW.NYPDCRIMESTOPPERS.COM or by texting your tips to 274637 (CRIMES) and then entering TIP577.
All calls are strictly confidential.