Ok so I have a riddle, please give it some thought before you skip to the answer which will be in the comments.

Little timmy is driving in the car with his father when they have a crash. Timmys father is killed instantly but timmy survives.

Timmy is taken to the nearest hospital and is preped for surgery, but the doctor enters and says "I'm sorry I cannot operate on timmy because he is my son.

How is this possible?