TMZ has obtained the 911 call placed moments after "Grey's Anatomy" star Patrick Dempsey rushed to save a teenager, who got into a horrifying car accident in front of the actor's Malibu home last week.
During the call, the female caller tells the operator, "There is a car accident ... one vehicle ... it's upside down."
She continues, "My husband and three other guys just pulled the boy out."
One of the men was Dempsey -- who helped pull the 17-year-old out of the wreckage and even called the kid's mother to tell her he was okay.
The boy was airlifted to a nearby hospital. He suffered a concussion and a "stretched" optic nerve -- but he's expected to make a full recovery.