Doctors for Aneurysm

Ο Ιατρός Κωνσταντίνος Θεμιστοκλής MD, MSc, PhD είναι Νευροχειρουργός και διατηρεί ιδιωτικό ιατρείο στους Αμπελόκηπους. Ειδικεύτηκε στην Νευροχειρουργική (2018) μετά από την εκπαίδευση στην Α’ Πανεπιστημιακή Νευροχειρουργική Κλινική του Γενικού Νοσοκομείου Αθηνών «Ο Ευαγγελισμός» (2013-2019). Εκεί απέκτησε ευρεία εμπειρία σε όλο το φάσμα της νευροχειρουργικής, καθώς και στην αντιμετώπιση της σπαστικότητας και του χρόνιου πόνου. Επίσης, έχει εργαστεί στην Νευροχειρουργική Κλινική του  Νοσοκομείου Royal Preston Hospital (2013) του Ηνωμένου Βασιλείου σε θέση Neurosurgical Fellow (Junior level) και μετεκπαιδευτεί στις Νευροχειρουργικές Κλινικές των Νοσοκομείων St George’s Hospital (2019-2020) και Leeds General Infirmary (2020-2021), αποκτώντας εκτεταμένη εμπειρία στην νευροχειρουργική ογκολογία, στις επεμβάσεις βάσης κρανίου, στην αγγειακή νευροχειρουργική και στην χειρουργική σπονδυλικής στήλης.

Έπειτα εργάστηκε ως Επικουρικός Επιμελητής Νευροχειρουργικής στο Γενικό Νοσοκομείο Αθηνών “Κοργιαλένειο-Μπενάκειο-ΕΕΣ” (2021-2024). Από το 2024 έως και σήμερα διατελεί σε θέση Επιμελητή Β’ του Ε.Σ.Υ., στο Γενικό Νοσοκομείο Πειραιά “Τζάνειο”.

Επίσης κατέχει τίτλο μεταπτυχιακών σπουδών μετά την ολοκλήρωση του προγράμματος “Μεθοδολογία Ιατρικής Έρευνας, Βιοστατιστική και Κλινική Βιοπληροφορική” του Τμήματος Ιατρικής του Πανεπιστήμιο Θεσσαλίας, καθώς και πιστοποιητικό εξειδικευμένης επιμόρφωσης ως Σύμβουλος Ιατρικής Δεοντολογίας και Βιοηθικής από το Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών. Από το 2023 είναι Διδάκτωρ  του Εθνικού και Καποδιστριακού Πανεπιστημίου Αθηνών, αφού ολοκλήρωσε την διδακτορική του έρευνα μελετώντας τον Νευροπροστατευτικό ρόλο της πρωτεΐνης Hamartin (TSC-1) κατά την εγκεφαλική ισχαιμία. Τα πειράματα διενεργήθηκαν στο Ίδρυμα Ιατροβιολογικών Ερευνών της Ακαδημίας Αθηνών, όπου και παραμένει μεταδιδακτορικός ερευνητής.

Έχοντας εκπαιδευτεί και εργαστεί σε μεγάλα νοσοκομειακά ιδρύματα του εξωτερικού και νοσοκομεία κορμού της Αττικής, διαθέτει μεγάλη εμπειρία για την αξιόπιστη αντιμετώπιση νευροχειρουργικών παθήσεων, παθήσεων σπονδυλικής στήλης και του χρόνιου πόνου.

Galyfos Georgios is a Vascular Surgeon - Angiologist, PhD holder from the National and Kapodistrian University of Athens, and maintains a private practice in Chalkida. He graduated from the Medical School of the National and Kapodistrian University of Athens and completed the Inter-University Master's program (MSc) in Endovascular Techniques at the same university in collaboration with the University of Milano. Additionally, he is an Academic Fellow - Vascular Surgeon at the National and Kapodistrian University of Athens. Furthermore, he specialized in Vascular Surgery at the General Hospital of Attica KAT and at EVK Herne in Witten, Germany. He has also worked as an External Associate at the Evgenidio Hospital and the Euroclinic of Athens. He is specialized in Endovascular arterial surgery, Conventional surgery, and Arterial diseases. Lastly, he is a member of the Hellenic Society for Vascular and Endovascular Surgery.

Triantafyllis Dimitrios is a Cardiologist who maintains private practices in Kypseli and Nea Psychiko. He holds a medical degree from the University of Ioannina with further training in Echocardiography (stress echo, transesophageal studies, three-dimensional imaging) from the Hippocrates Hospital of Athens and the Educational Program of the International Academy of Medical Ultrasound in Berlin. In addition to his private practice, he is a Scientific Associate - Cardiologist at DTHKA "Hygeia" and head of the Stress Echo Department at the Central Athens Clinic. He has also collaborated with the Euroclinic of Athens, where he gained significant experience in performing stress echo and transesophageal echocardiographic studies. At his cardiology clinic and laboratory, he offers comprehensive and specialized cardiological examinations covering the entire spectrum of cardiovascular diseases.

Velissariou Georgios is a Cardiologist and maintains a private practice in Acharnes. He specialized in cardiology at the 1st Cardiology Clinic of the General Hospital of Athens "Evangelismos" and has attended numerous seminars aimed at continuous professional development in his field. To date, he is a Scientific Collaborator of the HYGEIA group and a member of the Athens Medical Association. In 2024, after six months of training at the Onassis Cardiac Surgery Center, he obtained a license to perform stress echocardiography (stress echo).

Dr Med Galanis Nektarios is a Vascular Surgeon maintaining private vascular surgery clinics in Athens and Chalkida. He holds degrees in Medicine and Radiation Protection and is a Doctor of the Medical School of Ulm in Germany. He has been trained in vascular diagnostic ultrasound, endovascular techniques, and endovenous laser ablation techniques for varicose veins. He possesses extensive clinical experience, having worked for 18 consecutive years (2003-2020) in clinics abroad in Germany and Switzerland, and since March 2020, he has been professionally active in Greece.

The vascular surgeon has performed more than 4,500 procedures both abroad and in Greece.

Since 2020, after his repatriation, he has served as the Director of the 1st Vascular Surgery Clinic at "IASO Thessaly". From October 2022, for three consecutive years, he was the director of the 5th Vascular Surgery Clinic at "Metropolitan General", and since September 2025, he has been directing the 2nd Vascular Surgery Clinic at "White Cross - The Athens Clinic" in Athens.

From 2021 for three consecutive years, he has been a scientific associate at the Institute of Anatomy of the Medical School of Aristotle University of Thessaloniki, where he taught Anatomy to medical students. Since September 2025, he continues his academic and teaching activities at the same school, now holding the position of Assistant Professor of Medicine at AUTh Medical School.

Additionally, during the academic year 2024–2025, he served as a scientific associate in the Anatomy Laboratory of the Medical School of the National and Kapodistrian University of Athens.

Drtoskas Pantelis is a Cardiologist with private practices in Kifisia and Palaio Faliro. He graduated from the Medical School of the University of Athens, specializing in preventive cardiology and cardiac rehabilitation. He completed his specialty training at the First University Cardiology Clinic of Hippocrateio Hospital, gaining experience across the full spectrum of modern cardiology – from emergency care to long-term monitoring of cardiac patients.

As a fellow of the Hellenic Cardiological Foundation and concurrently with the completion of his doctoral thesis, he trained in the United Kingdom (Bexley Cardiac Rehabilitation – Goldie Leigh Hospital), focusing on the prevention of cardiovascular diseases and rehabilitation of patients post-myocardial infarction or cardiac surgery.

He maintains a private practice and responsibly manages all cardiology cases, both preventive and chronic or acute conditions. He provides comprehensive diagnostic testing (cardiac Triplex, Holter monitoring for rhythm and blood pressure, stress testing, preoperative evaluation, etc.) and supportive services based on the principles of precision medicine: genetic testing, stress management, personalized nutrition, and prescribed exercise.

He has participated as an invited speaker at numerous medical conferences and has published scientific articles in reputable international journals, actively contributing to the advancement of contemporary cardiological knowledge.

His goal is to provide high-quality care, grounded in scientific evidence and a compassionate approach – aiming not only for treatment but also for the long-term preservation of cardiovascular health.

Elena Xairetaki - Premedicare is a Cardiologist and a member of the medical team at the Premedicare Polyclinic. She is a graduate of the Medical School of the National and Kapodistrian University of Athens (NKUA) and provides her services as a Cardiologist while also serving as the Scientific Director of the BIOIATRIKI Group. She specialized in Cardiology at Evangelismos Hospital and has served as an Assistant Consultant at Pammakaristos Hospital. Combining her experience and recognized scientific expertise, she manages a wide range of cases encompassing the full spectrum of her specialty.

Marinakos Athanasios is a Specialist Cardiologist with a private practice in the Ampelokipi area. He possesses significant experience in Clinical Cardiology as well as specialized knowledge in Interventional Cardiology and Advanced Echocardiography. The clinic offers Electrocardiograms, Cardiac and Thoracic Aorta Triplex Ultrasound, 24-hour Blood Pressure Holter, 24-48 hour/7-day Rhythm Holter monitoring, utilizing state-of-the-art equipment, and issues health certificates and attestations. For the diagnosis and treatment of complex cardiological cases, he collaborates with the H.H.G group, reputable diagnostic centers, and public healthcare facilities. He holds a medical degree from the Semmelweis University Faculty of Medicine in Budapest. He specialized in Cardiology at the General Regional Hospital of Tripoli and the Konstadopouleio New Ionia "Agia Olga" Hospital. At the Hemodynamic Laboratory of the latter, he received further training in Interventional Cardiology, and at the Onassis Cardiac Surgery Center, he trained in Latest Ultrasound Techniques. He has worked as a Consultant Cardiologist B at the Cardiology Clinic and Hemodynamic Laboratory of the General Hospital of Athens "Laiko," where he gained experience managing cardiology patients with significant comorbidities (pathological, rheumatological, surgical, nephrological, and oncological cases). He has also worked as a Consultant Cardiologist in the interventional cardiology team at the private Metropolitan Hospital, acquiring extensive experience managing cardiology patients undergoing complex angioplasties and transcatheter valve replacement procedures. He is a certified Basic and Advanced Life Support Resuscitator, an area in which he has substantial authorship and educational work. He actively participates in numerous conferences in Greece and abroad.

Papamentzelopoulos Spyridon is a Cardiologist and operates a private practice in Piraeus. He was admitted to the Military Officers School of Corps and is a graduate of the Medical School of Aristotle University of Thessaloniki. He initially specialized in Pathology at the 401 General Military Hospital of Athens for two years, including nine months in the Intensive Care Unit, and subsequently specialized in Cardiology for four years at the Onassis Cardiac Surgery Center. There, he participated in the management of numerous and complex cardiological cases, while also performing hundreds of diagnostic (stress tests, echocardiograms, Holter monitoring, and others) and interventional procedures (coronary angiographies, angioplasties, cardiac catheterizations, intravenous pacing). Additionally, he has participated in international studies of new transcatheter techniques for treating cardiac valve diseases (TAVI), as well as in the monitoring of patients with heart failure (using left ventricular assist devices [LVAD]) and heart transplantation. At his private practice, he provides specialized solutions tailored to the needs of his patients.