Patrick Dempsey's Heroic Rescue CAR CRASH CARNAGE

EXCLUSIVE
Patrick Dempsey Car Crash rescue photos
"Grey's Anatomy" star Patrick Dempsey's rescue mission in Malibu this week was even more badass than we thought -- just take a look at the scene of the accident!!!

TMZ broke the story ... a teenage driver crashed and flipped his Mustang on the road right outside Dempsey's Malibu home -- and the actor came to the rescue, crowbar in hand to pry the doors open.

Dempsey successfully pulled the driver from the wreckage -- a 17-year-old named Weston Massett -- who tells TMZ, when he opened his eyes, the actor was looking right down at him.

Massett asked, "Are you famous?" ... and Patrick coolly replied, "I'm a doctor."

We're told Patrick called Massett's mother and told her about the accident -- keeping her calm the entire time. Massett was then airlifted to a nearby hospital, and Patrick followed to make sure the kid was okay.

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Miraculously, Massett suffered no serious injuries -- just a concussion and a "stretched" optic nerve. He's expected to make a full recovery.

There was also a passenger in the car, Dylan Miller, but thankfully we're told Miller suffered no injuries whatsoever.

Wear your seat belts, kids.