Maneeli Tuun was an NPC, an alien doctor on a hospital on an asteroid called Polis Massa. He operated on Padme Amidala as she was dying and going into labor.
Revelation of the Sith Edit
He operated on Padme as she was dying from Anakin's Force choke. He was able to determine that while Padme couldn't be saved, the twins she was about to give birth to could survive. He turned Padme over to an EW-3 Midwife Droid.
The Next Generation Edit
Darth Vader later revealed that Vader gained some information on the true parentage of Princess form the Polis Massa medical staff after some...persuasion. Given Vader's normal methods of...persuasion, it's at best doubtful whether any of the medical staff was still alive after Vader's...persuasion.