Complex sentence: His father, Dr. Michael Tatartcheff, was a physician and surgeon in Timmins, and his grandfather, Dr. Assen Tatartcheff, was a member of the Macedonian Liberation Front IMRE.
Split into simpler sentences: His father, Dr. Michael Tatartcheff, was a Physician-Surgeon in Timmins. And his grandfather, Dr. Assen Tatartcheff, was a member of the Macedonian Liberation Front IMRE.