Doctor Puri was the chief medical officer aboard the USS Enterprise during its maiden voyage in 2258.

Shortly after launching, the Enterprise became involved in a combat situation with the Romulan mining vessel Narada. During the attack, Puri was killed while on deck six, leaving Dr. Leonard McCoy in command of sickbay. (Star Trek)

Chief medical officers of the starships Enterprise
Enterprise NX-01:	Phlox
USS Enterprise:	April • Boyce • Piper • McCoy • Chapel
USS Enterprise-A:	McCoy
USS Enterprise-D:	Crusher • Pulaski
USS Enterprise-E:	Crusher
ISS Enterprise NX-01:	Phlox
ISS Enterprise NCC-1701:	McCoy
USS Enterprise (alternate reality):	Puri • McCoy