Dr. Antonakis was born in Stoloi, Monofatsi in Heraklion, Crete. He graduated from the Medical School of Heraklion and completed his specialty in Clinical Biopathology (Microbiology) at the Venizelio-Pananio General Hospital of Heraklion. Dr. Antonakis worked as a specialist at Clinical Biopathology (Microbiology) for five years at the General Hospital of Heraklion Venizeleio – Pananio and for ten years at the General Clinic Aghios Georgios in Heraklion.