Time for dr. Oz, lifesaver. It's not a tv show. It's real life. In the last week, he's come to the rescue of not one, but two victims. Springing into action at the right place at the right time. Abc's... See More
Time for dr. Oz, lifesaver. It's not a tv show. It's real life. In the last week, he's come to the rescue of not one, but two victims. Springing into action at the right place at the right time. Abc's paula faris has all of the details. Reporter: We've seen him put his skills to work on television. Today, I'm sharing my three best-kept health secrets. Reporter: But tuesday, dr. Mehmet oz found himself in the middle of a medical drama, on the busy streets of manhattan. Keep on moving, everybody. Reporter: This cell phone video shows dr. Oz moments after he rushed to the scene of a car accident. Just steps away from his tv studio. This taxi cab jumped the curb, hitting a female british tourist on the sidewalk and receiving her leg. Sian green was on the first day of a vacation she had been looking forward to months. Sitting on the sidewalk, eating a hot dog, when the cab came out of nowhere. She screamed bloody murder. Reporter: David rushed to the 23-year-old's aid, and made a tourniquet out of his belt. I was holding it. And I felt somebody nudge me. I was a little angry. I said, I'm waiting for a doctor. And I heard, I'm dr. Oz. I said, what should I do? He said, you're doing it. Reporter: Dr. Oz posted this photo with him on facebook, praising him and first responders for their quick thinking. But this isn't the first time the good doctor who still performs heart surgery, has come to the rescue at a rather unusual time. Just a few days ago, he helped a man who collapsed next to him during a 5k run, even visiting him in the hospital. As for sian green, after reportedly losing her foot, she is recovering in the hospital, thanks, in large part, to dr. Oz. For "good morning america," paula faris, abc news, new york.
This transcript has been automatically generated and may not be 100% accurate.