Police said an officer stopped a car near the intersection of 22nd and Tioga streets just after 11 p.m. Sunday.
After the officer noticed a gun inside the vehicle, police said the suspect then attempted to drive off.
As the suspect tried to get away, police said one of the car doors was open and hit the officer.
The officer was taken to an area hospital with minor injuries.
Philadelphia officer injured while stopping suspect in Tioga-Nicetown
Later, police found the vehicle with a gun inside, but the suspect had fled.