Authorities say Gorman was on routine patrol with his partner when they saw a car speeding the wrong way on Allegheny Avenue with four people inside.
The officers turned around and chased the car. It stopped a short time later and one person in the back seat of the car got out and ran.
Officer Gorman chased after him as the suspect climbed over a fence near Hope and Howard streets.
As Officer Gorman climbed the fence after him, there were gunshots and Gorman was hit in the shoulder with bullets from a .45 caliber weapon.
The suspect, now identified by police as Martinez, got away. The three other people inside the car were immediately arrested.
Gorman was rushed to Temple Hospital where he was treated and released.
Police say Martinez, of the 2800 block of Lee Street, should be considered armed and dangerous.
Anyone with information can call Philadelphia Police at 215-686-TIPS. You can also submit a tip online.