Dr. Nicole Vittoria Zoellner-McCoy was a renowned Starfleet physician and scientist in the 23rd and 24th centuries. She was the second wife of Dr. Leonard McCoy, twin sister of Captain Mark Zoellner, and adoptive mother of Sophia McCoy. Often restless, Nicole chose to spend much of her early Starfleet career serving on ships rather than in Starfleet Teaching Hospital. Her first role as a senior medical officer was as Assistant Chief Medical Officer of the USS Enterprise during its first five-year mission. It was at this time that she would meet her future husband, and she continued to serve aboard the Enterprise thoroughout much of the rest of her career.