Stylianos Vitzileos was born and raised in Athens, of Naxos origin. He was admitted to the Medical School of the National and Kapodistrian University of Athens in 1998 through nationwide examinations.
After graduation, he completed his military service in the Navy, providing medical services at the Naval Hospital of Salamina and later at the Hellenic Navy Fast Boat Command.
He served as a rural doctor at the General Hospital of Syros and then at the General Hospital – Health Centre of Naxos.
He received his specialty in General Family Medicine from the General State Hospital of Nikea – Piraeus “Agios Panteleimon” in 2012. During his residency, he trained in a highly demanding hospital environment, dealing with acute and chronic illnesses in Primary Health Care, specifically in Pathology, Surgery, Cardiology, Orthopaedics, Gynaecology, ENT, Paediatrics, Public Health, Psychiatry, Microbiology, Ophthalmology, the Diabetes Centre for patients with Diabetes, and in hospital clinics outside the curriculum, such as Pulmonology, Gastroenterology, Nephrology, and Intensive Care.
He trained in Pre-hospital Emergency Medicine (PHEM) and obtained a diploma from the National Centre for Emergency Assistance (EKAV). He has participated in national conferences as a speaker, but also presenting papers.