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Patrick Dempsey, who plays neurosurgeon Dr. Derek Shepherd on the hit show "Grey's Anatomy," not only saves lives on television but also in real life.

Dempsey pulled a teenage boy to safety after his car flipped over near the star's home in Malibu, Calif. last week.

"I was scared for my life, I was upside down," said Weston Masset.

Masset was barely conscious and trapped inside the twisted wreck of his car.

But Dempsey saw the car flip and used a crow bar to pry the doors open. He pulled the teenager to safety and called paramedics, who airlifted Masset to the hospital.

Miraculously, Masset suffered only a concussion and an eye injury.

His first words on seeing Dempsey pulling him out of the wreck were, "'Are you famous?" and Dempsey said, "Yeah I'm a doctor," Masset said.

Dempsey called the boy's mother to inform her of the situation.

"He had a certain authority in his voice," said Masset's mother Mary Beth Masset. "I asked if he was a paramedic and he said no, 'this is Patrick Dempsey.'"

"I'm just super grateful. I can't wait to thank him personally," said Mary Beth Masset.