It happened just after 3 a.m. Saturday morning near the 4100 block of North Broad Street.
Police found a shell casing and blood in a Sunoco parking lot.
That's when they say a 43-year-old man showed up to Temple University Hospital in a private vehicle with a gunshot wound to his upper left leg.
He is in stable condition.
Authorities say an argument led up to the shooting.
No word on the suspect.