Hippocrates

Hippocrates was a 5th century Human. Born in Greece, Hippocrates was a physician who became known as Earth's "Father of Medicine", as he developed a code of medical ethics which later became known as the Hippocratic Oath, which is taken by physicians as they begin medical practice.

When the USS Enterprise (NCC-1701) visited the planet Platonius in 2268, Philana gave Doctor Leonard McCoy a scroll of ancient Greek cures which had been penned by Hippocrates himself. 

While discussing the fame and notoriety of Starfleet Fleet Admiral Karis Tatenen in 2277, Spock compared meeting Tatenen to him meeting Surak, however James T. Kirk disagreed, stating that Spock meeting Surak would be like McCoy meeting Hippocrates. (SS TOS (The Blaze of Glory))