David Takemura was a doctor in the 24th century. He had been awarded a MD and a VES.
In 2367, he worked at the Wiemer Medical Facility on Melina II. On stardate 44034.3, he was the attending physician for patient Rob Legato. He diagnosed his patient with Iresine Syndrome. This information was archived in the Melina II Planetary Medical Database. (TNG: "Violations", okudagram)