Cardiologists

Kouremenou Xrysoula is a Cardiologist and maintains a private practice in Ampelokipoi. She is a graduate of the Medical School and to this day serves as a Scientific Associate at Metropolitan General, Iaso Marousi, the Medical Center at the Psychiko branch, and as the Scientific Head Cardiologist at the International Diagnostic Centers - Bioiatriki. During her specialty training, she extensively engaged with the full spectrum of cardiology and, through her three-month work in the Nuclear Medicine Department of the General Hospital of Athens "Evangelismos," received training in performing myocardial SPECT. Additionally, due to her prior experience in gynecological obstetric clinics and her experience from the in vitro fertilization center where she worked, she has the capability to monitor women during their pregnancies to prevent adverse outcomes. Finally, she is a member of the Hellenic Cardiological Society and the Hellenic Society of Atherosclerosis and has participated in numerous conferences in Greece and abroad, contributing a significant number of studies and publications.

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).

Ο Κυριάκου Λουκάς MD, PhD, Dr., ΕΠΙΜ.Α' ΕΣΥ είναι Ιατρός Καρδιολόγος – Εντατικολόγος, πτυχιούχος της Ιατρικής Σχολής του Πανεπιστημίου Αθηνών και διατηρεί ιδιωτικό ιατρείο στην Παλλήνη. Είναι Διδάκτωρ της Ιατρικής Σχολής του Πανεπιστημίου Αθηνών, με ενεργή επιστημονική δραστηριότητα και συμμετοχή σε ιατρικά συνέδρια. Διαθέτει τον επίσημο τίτλο του Εντατικολόγου κατόπιν επιτυχών εξετάσεων. Κατέχει πολυετή κλινική εμπειρία στη διάγνωση και αντιμετώπιση καρδιαγγειακών νοσημάτων. Διατελεί Επιμελητής Α΄ στο Εθνικό Σύστημα Υγείας και συγκεκριμένα στη Μονάδα Εμφραγμάτων του Γενικού Νοσοκομείου Νέας Ιωνίας Κωνσταντοπούλειο - Αγία Όλγα, με καθημερινή ενασχόληση τόσο με επείγοντα όσο και με χρόνια καρδιολογικά περιστατικά.Επίσης διετέλεσε Διοικητικά και Επιστημονικά Υπεύθυνος για το Τμήμα Επειγόντων Περιστατικών του Γενικού Νοσοκομείου Νέας Ιωνίας Κωνσταντοπούλειο - Αγία Όλγα για 2 έτη καθώς και Υπεύθυνος τμήματος ΜΕΘ COVID-19(Πρώην ΜΕΘ-Κ) για το διάστημα του COVID-19. Διατηρεί ιδιαίτερο ενδιαφέρον στην κλινική και επείγουσα καρδιολογία, την καρδιακή ανεπάρκεια, τις αρρυθμίες και την προληπτική καρδιολογία. Στόχος του είναι η εξατομικευμένη προσέγγιση κάθε ασθενούς, σύμφωνα με τις σύγχρονες κατευθυντήριες οδηγίες.

Karali Maria - Dionysia is a Cardiologist and maintains a private practice in Kallithea. She is a PhD candidate at the Medical School of the National and Kapodistrian University of Athens and graduated from the medical department of the same institution. She completed her Cardiology specialty training working as a resident physician at the Athens General Hospital "Laiko," Metropolitan Hospital, and Piraeus General Hospital "Tzaneio." Among these, she served as a Scientific Collaborator at the Athens General Hospital "Hippokration." To date, she has authored numerous medical papers, both undergraduate and postgraduate, and simultaneously ensures her continuous professional development through attendance and participation in a large number of medical conferences, seminars, and workshops.

Stamoulopoulos Ioannis is a cardiologist who maintains a private practice in Elefsina. Additionally, he provides medical services at a private practice in Mavili Square and serves as a scientific collaborator at the heart failure clinic of the First University Department of the Hippokration Hospital of Athens. He completed his cardiology specialty at the Therapeutic Clinic of the Medical School of the National and Kapodistrian University of Athens, General Hospital of Athens "Alexandra." He holds a postgraduate degree from the Medical School of the University of Athens in the postgraduate program "Arterial Hypertension and Associated Cardiovascular and Renal Diseases." He is the author of scientific articles and actively participates as an invited speaker at medical conferences.

Dr. Kolyviras Thanos MD, PhD, FESC is an Interventional Cardiologist and Director of the 4th Cardiology Clinic - Interventional Cardiology at Metropolitan General Hospital, HHG Group. He holds an official Specialization Title in Interventional Cardiology and specializes in complex coronary artery interventions and the interventional treatment of aortic valve stenosis using the TAVI method. He was admitted through the Panhellenic Examinations to the Medical School of the University of Athens in 2002 and subsequently moved to Brussels (Belgium) in 2009, where he specialized in Cardiology. In September 2016, he was awarded an honorary doctorate from the Medical School of the University of Athens with honors. He has performed more than 3,000 coronary artery procedures and is an accredited Interventional Cardiologist for the implantation of percutaneous aortic valves using the TAVI method. He has received a Fellowship from the European Society of Cardiology to attend the European Congress in Barcelona (2014), where he was awarded for the best oral presentation. Additionally, in 2020, he obtained certification from the European Association of Percutaneous Coronary Interventions (EAPCI) – Certificate of Excellence and since 2021 he is a Fellow of the European Society of Cardiology (FESC). He has an extensive authorial and research portfolio, with particular interest and involvement in the education of young colleagues. His future plans focus on clinical research in the fields of interventional cardiology for the treatment primarily of valvular diseases with new transcatheter techniques, as well as interdisciplinary collaboration on specialized topics in interventional cardiology both in Greece and abroad.

Vasileios Kefalas is a Cardiologist who maintains a private practice in Evosmos, Thessaloniki. Concurrently, he collaborates with the Rehabilitation Center "Armonia" and the "Kyanós Stavrós" clinic. He studied at the Medical School of the University of Catania, Italy. He completed the general part of his specialty at the General Hospital of Naoussa and subsequently specialized in Cardiology at the General Hospital of Edessa and the General Hospital of Thessaloniki "Hippocratio." Additionally, he has served as Health Supervisor at an Elderly Care Center. Finally, the doctor specializes in echocardiography, arterial hypertension, and atrial fibrillation.

Athanasiadis Ioannis is a Cardiologist with a private practice in Ano Patisia. He graduated from the Medical School of the National and Kapodistrian University of Athens, completed his Cardiology specialization at the General Hospital "Asklipieio" Voula, and holds a certification in Advanced Cardiac Life Support. Additionally, he specialized in Internal Medicine at the Internal Medicine Clinic of the General Hospital of Theia Pronia "Pammakaristos." Throughout his career, he has served as a Scientific Collaborator of the Cardiology Clinic at the General Children's Hospital "Agia Sofia" and the Hypertension and Cardiovascular Protection Clinic of the Cardiology Clinic at the General Hospital "Asklipieio" Voula. Finally, he regularly attends conferences to stay informed about the latest advancements in his field and has contributed to numerous poster presentations at conferences both in Greece and internationally.

Oikonomidis Nikolaos is a Cardiologist and PhD holder from the Medical School of the University of Athens, with a private practice in Peristeri. Additionally, he serves as a Specialist Cardiologist in the Cardiology Department of Metropolitan Hospital and Cardiologist Consultant at YGEIA Hospital. He specializes in Clinical and Interventional Cardiology, as well as Echocardiography. He manages a wide range of cases, consistently combining his thorough scientific knowledge with many years of experience and professionalism. Furthermore, he continuously pursues education and training in the field of Cardiology, having attended numerous conferences, seminars, and training programs both in Greece and abroad. Finally, his academic publications are noteworthy, including his doctoral thesis entitled "Study of inflammation, tissue, and immunological response in early stages of atheromatosis."

Dr. Xatzianesti Fryni Cardiofocus, MD, MSc, is a Specialist Cardiologist at HYGEIA Hospital and maintains a private practice in Kolonaki. She has specialized at the Onassis Cardiac Surgery Center in cardiovascular imaging (stress echo, strain echocardiography, transesophageal echocardiogram) and is clinically and scientifically engaged in heart failure. She holds certification from the Hellenic Cardiological Society in smoking cessation, operating one of the few certified cardiology clinics in this field. She graduated from the Medical School of Democritus University of Thrace and holds a master's degree (MSc) from the National and Kapodistrian University of Athens, specializing in International Medicine - Infectious Diseases and Disaster Medicine. She has an extensive educational and research background, participating in numerous research studies with a focus on heart failure, and also has numerous contributions in conferences with lectures and presentations. 

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.

Paulidis Paulos is a Cardiologist. He obtained his specialty in Cardiology at the Cardiology Department of the Hippocrateion Hospital in Athens. He completed further training at the echocardiography laboratory of the cardiology clinic at the University Hospital of Zurich. He has participated in studies presented at Greek and international conferences, published in Greek and international scientific journals, and has spoken at conferences and training programs for residents. He considers clinical experience and thorough scientific training of the physician as the most important factors in patient care. With a patient-centered approach and a focus on compassionate care, he manages conditions across the full spectrum of cardiology and provides specialized services tailored to the needs of each patient. The doctor conducts scheduled home visits with the capability to perform echocardiographic studies (heart triplex) using a modern portable device, as well as electrocardiograms and Holter monitoring.

Η Δρ. Πολυτάρχου Καλή είναι Καρδιολόγος, Επιμελήτρια του Α΄ Καρδιολογικού τμήματος / Ηλεκτροφυσιολογίας και Βηματοδοτών του Ερρίκος Ντυνάν Hospital Center, ενώ διατηρεί και ιδιωτικό ιατρείο στη Γλυφάδα. Είναι απόφοιτος της Ιατρικής Σχολής του Εθνικού και Καποδιστριακού Πανεπιστημίου Αθηνών, κάτοχος Μεταπτυχιακού Διπλώματος Ειδίκευσης και Διδάκτωρ της Ιατρικής Σχολής του Πανεπιστημίου Αθηνών, με αντικείμενο τη δυναμική υπερηχοκαρδιογραφία (Stress Echo) και την καρδιακή ανεπάρκεια. Το 2018 έλαβε τον τίτλο ειδικότητας της Καρδιολογίας και το Ευρωπαϊκό Δίπλωμα Καρδιολογίας (European Examination in General Cardiology, European Society of Cardiology). Έχει εργαστεί και ειδικευτεί επί 5 έτη στην Α΄ Καρδιολογική κλινική του Γενικού Νοσοκομείου Αθηνών "Ο Ευαγγελισμός", και απέκτησε επιπρόσθετη εμπειρία στη Παιδο - Καρδιολογία στο Νοσοκομείο Παίδων "Η Αγία Σοφία". Ακολούθως, εξειδικεύτηκε στις νεότερες τεχνικές υπερηχοκαρδιογραφίας, τη δυναμική υπερηχοκαρδιογραφία (Stress Echo) με φαρμακευτική κόπωση και κόπωση με ύπτιο ποδήλατο και τρισδιάστατο διοισοφάγειο υπερηχοκαρδιογράφημα, ως επιστημονικός συνεργάτης του Εργαστηρίου Δυναμικής Υπερηχοκαρδιογραφίας της Α΄ Πανεπιστημιακής Καρδιολογικής Κλινικής του Γενικού Νοσοκομείου Αθηνών "Ιπποκράτειο". Εν συνεχεία, υπηρέτησε επί ένα έτος στο Ειδικό Αντικαρκινικό Νοσοκομείο Πειραία "Μεταξά", ως επιμελήτρια Καρδιολόγος, με ιδιαίτερη ενασχόληση την Καρδιο- Ογκολογία. Η κ. Πολυτάρχου έχει σημαντικό επιστημονικό και ερευνητικό έργο με πλήθος δημοσιευμένων επιστημονικών άρθρων σε έγκριτα διεθνή ξενόγλωσσα περιοδικά με υψηλό συντελεστή απήχησης (impact factor), καθώς και σε διεθνή και ελληνικά επιστημονικά συνέδρια Καρδιολογίας. Έχει συμμετάσχει ως προσκεκλημένη ομιλήτρια και σχολιάστρια σε διάφορα επιστημονικά συνέδρια και είναι συγγραφέας ελληνικών και ξενόγλωσσων βιβλίων καρδιολογίας. Είναι ενεργό μέλος της Ελληνικής και της Ευρωπαϊκής Καρδιολογικής Εταιρίας, της Ομάδας Εργασίας Ηχωκαρδιολογίας και του Ιατρικού Συλλόγου Αθηνών και Πειραιώς. Είναι Καρδιολόγος εξειδικευμένη στην υπερηχοκαρδιογραφία, την καρδιακή ανεπάρκεια και μυοκαρδιοπάθειες, τις βαλβιδοπάθειες, την αρτηριακή υπέρταση, τη στεφανιαία νόσο και τις αρρυθμίες.

Military cardiologist Papanastasiou Xristos was admitted to the Military School of Officers Corps (S.S.A.S.) in 2006 and obtained his Medical Degree (MD) from the Medical School of Aristotle University of Thessaloniki (A.U.Th.) in 2012, graduating with the grade "Very Good" (8.1).

In 2016, he completed his postgraduate studies in "Medical Research Methodology" at the Medical School of A.U.Th., achieving the grade "Excellent" (9.4). Subsequently, he specialized for two years in the Pathology Clinic of the 424 General Military Training Hospital and for four years in the 1st University Cardiology Clinic of the General Hospital AHEPA.

In June 2025, he completed his doctoral thesis with the grade "Excellent with Distinction," on the topic: "The diagnostic and prognostic value of cardiac magnetic resonance imaging in patients with heart failure."

He holds the European Diploma in Cardiology and the European Diploma in Echocardiography, following successful participation in pan-European examinations.

Throughout his medical career, Dr. Papanastasiou has collaborated in research with leading universities in Europe and the United States of America, publishing significant scientific articles in reputable international journals with a high impact factor, covering the entire spectrum of cardiovascular diseases.

Simultaneously, he has served as a reviewer for prestigious international scientific journals such as the Journal of the American College of Cardiology: Cardiovascular Imaging, American Heart Journal, Heart (official journal of the British Cardiovascular Society), and International Journal of Cardiology.

Tsoukalas Dionysios is a Cardiologist who maintains a private practice in Pallini. He is a graduate of the Medical School of the University of Patras. He specialized at the General Hospital of Nikaia - Piraeus and obtained the Cardiology specialty title in 2018. Since then, he has worked as a Specialist Cardiologist at the General Hospital of Nikaia Piraeus "Agios Panteleimon," the General Hospital of Trikala, the General Hospital Asklipieio Voula, as well as at the Metropolitan General Hospital, where he currently serves as Consultant of the 2nd Cardiology Clinic. He is also a PhD candidate at the Medical School of the National and Kapodistrian University of Athens. Throughout his career, he has acquired significant experience across the full spectrum of clinical and interventional cardiology, having performed numerous coronary angiographies and angioplasties, both in emergency and routine settings. Additionally, he holds expertise in the latest echocardiographic techniques (Stress Echo - Transesophageal Echocardiography) from the General Hospital Asklipieio Voula. Finally, he is a member of the Hellenic Cardiological Society and the Hellenic College of Cardiology, the Scientific Association of Interventional Cardiology, the Working Groups on Echocardiography, Hypertension and Interventional Cardiology, and the European Association of Cardiovascular Imaging.

Kristi Magnisali is a specialist Cardiologist, graduate of the Medical School of the National and Kapodistrian University of Athens, with extensive and high-level scientific training in Internal Pathology and Cardiology. Her specialization was completed at leading tertiary care hospitals in Germany, including the University Hospital of Cologne (Uniklinik Köln) and the University Hospital of Düsseldorf (Universitätsklinikum Düsseldorf), where she was trained in all modern diagnostic and therapeutic methods of Cardiology, with particular emphasis on Interventional Cardiology, Intensive Care, and Arrhythmology.

After completing her specialty, she served as a Specialist Cardiologist at the University Hospital of Düsseldorf, undertaking increased clinical and scientific responsibilities, including leadership of the Arrhythmia Clinic and supervision of the Echocardiography Laboratory. As part of her ongoing scientific development, she further specialized in the latest ultrasound techniques, such as dynamic echocardiography (stress echocardiography) with pharmacological stress and transesophageal echocardiography, significantly enhancing diagnostic accuracy in the investigation of complex cardiological diseases.

Possessing significant clinical and scientific work, she currently serves as an Attending Cardiologist at Metropolitan Hospital, integrated within the Clinic of Interventional Cardiology, Electrophysiology, and Pacemaker Therapy, while simultaneously acting as a Scientific Collaborator at the 2nd University Clinic of the Children's Hospital “Aghia Sophia Kyriakou,” where she is active in the specialized field of Pediatric Cardiology, focusing on the diagnosis, monitoring, and management of congenital and acquired pediatric heart diseases.

Dr. Tzanis Georgios MD, PhD, FESC is an Interventional Cardiologist and the Director of the 4th Cardiology Clinic at Metropolitan General. He specializes in coronary artery disease and valvular heart diseases and maintains a private practice in Dafni. He holds a doctorate and graduated from the Medical School of the National and Kapodistrian University of Athens, where he also teaches in the postgraduate program "Exercise, Ergospirrometry, and Rehabilitation." He obtained his Cardiology specialty from the "Laiko" University Hospital of Athens. He specialized in interventional cardiology at the "San Raffaele" hospital in Milan, which is among the most renowned centers in Europe and one of the most distinguished worldwide in the field of interventional cardiology. Recently, he was honored with the prestigious title of Cardiologist Representative at the European Society of Cardiology (Interventional Cardiology sector - EAPCI Young Ambassador). He has been awarded major scholarships from highly respected scientific societies in Greece and Europe, including the Hellenic College of Cardiology for postdoctoral research in diabetes mellitus and coronary artery disease, and from the Hellenic Cardiological Society for further training in transcatheter aortic valve replacement. From the European Society of Cardiology (ESC), he received a scholarship in 2017 for specialization in the management of complex coronary artery disease at a world-renowned center. He has published more than 170 scientific papers in highly reputable international scientific journals and has presented at international conferences. Specifically, 70 of his scientific studies have been published in peer-reviewed international journals. Finally, he serves as a reviewer for international scientific journals and has participated as a speaker at numerous international and Greek conferences.