New footage shows mumbling maniac suspected of punching Harlem Hospital pediatrician onto NYC subway tracks

New surveillance footage shows the still-at-large mumbling maniac who allegedly punched a 44-year-old Harlem Hospital pediatrician — sending him tumbling onto the subway tracks nearly a month ago.

The brief clip, released by the NYPD Thursday, shows the brute suspected of slugging the doc on the northbound 1 train platform at 50th Street the evening of Aug. 9. 

The elusive attacker is shown strolling on the sidewalk wearing a backwards cap, white T-shirt and black shorts and carrying a backpack.

The suspect muttered something indecipherable before slugging the victim, a complete stranger, around 7:50 p.m., causing him to fall onto the roadbed, cops said.

Bystanders helped the bruised-up man back up onto the platform and he was hospitalized in stable condition.

The victim’s friend Takayuki Matsumoto, previously told The Post his pal was heading back to his Upper West Side pad after a hospital shift and waiting for the train when the nut came up behind him.

“[The unhinged attacker] was screaming and walking toward him, and the next thing, [the victim] was pushed,” Matsumoto said as his friend recovered. 

Matsumoto said the attack will unfortunately do little to deter the victim from riding the subway.

“That’s the only way he can get to the hospital,” he said.

Police are looking for the public’s help in tracking down the at-large menace. 

Anyone with information on the crime is asked to call the NYPD’s Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782). 

The public can also submit their tips by logging onto the Crime Stoppers website at  https://crimestoppers.nypdonline.org/, or on X @NYPDTips. All calls are strictly confidential.