Phlox

Phlox was a Denobulan physician who served as chief medical officer during the historic voyages of the Enterprise (NX-01) under Captain Jonathan Archer from the years 2151 to 2161.

Like most Denobulan males, he had three wives, who in turn had three husbands. His first wife, Xesophia died in a drowning accident in 2124.

Enterprise
In February of 2152 Phlox was assigned to decontaminate the quarters of Crewman Daniels, who had been revealed to be a time-traveler from the 31st century. While in Daniels quarters Phlox discovered a device that allowed him travel through time at will and decided to use the device to rescue his wife Exsophia before the accident.

The device didn't work as Phlox hoped, and he was only able to travel back ten months, shortly after Enterprise's launch. With Daniel's assistance, Phlox was able to use the device to return to the proper time, but not before glimpsing a possible future in which Enterprise was under attack by Nausican pirates. (Strange New Worlds VI, short story Cabin E-14).

Continuing Influence
In the year 2375 Phlox's notes on a malady known as Vulcans scourge were crucial to Doctors Julian Bashir and Beverly Crusher on Federation starbase Deep Space 9 in their efforts in finding a cure for a virus created by the Dominion that targeted Vulcans. (TotDW short story Mirror Eyes)

By the year 2379, a medical research facility named the Phlox Institute had been named in his honor. Katherine Pulaski served at the Phlox Institute. (TNG novel A Time for War, a Time for Peace)