Cardiologists in Attica

Giannitsi Sofia MD, PhD is a Cardiologist and Consultant of the Cardiology Team at "HYGEIA" Hospital and maintains a private practice in Argyroupoli. She graduated and earned her doctorate from the Medical School of the University of Ioannina, with her dissertation focusing on heart failure. In 2021, she obtained her Cardiology specialty title and the European Diploma in Cardiology (European Examination in General Cardiology, European Society of Cardiology). She has worked and specialized for four years in the Cardiology Department of the Asklipieio Voulas General Hospital and acquired additional experience in Electrophysiology, Nuclear Cardiology, and Cardiothoracic Surgery at the respective clinics of the Athens General Hospital "Evangelismos". She has a significant scientific and research record, participating as a principal investigator in numerous international multicenter studies, and has authored numerous scientific articles published in reputable international peer-reviewed journals as well as presented at international and Greek Cardiology scientific conferences. She has participated as an invited speaker and commentator at various scientific conferences, with some of her lectures having received distinction and awards from the Hellenic Cardiological Society. Additionally, she is the author of chapters in both Greek and international Cardiology textbooks. She is an active member of the Hellenic and European Societies of Cardiology, the Hellenic Resuscitation Council (HRC), the Echocardiography Working Group, the European Association of Cardiovascular Imaging (EACVI), and the Athens Medical Association. Finally, she is certified to provide specialized life support and serves as an instructor in the ADVANCED LIFE SUPPORT (ALS) courses conducted by the European Resuscitation Council, organized by the Hellenic Resuscitation Council.

Koutagiar Iosif is a Cardiologist and maintains a private practice in Peristeri. Simultaneously, he serves as Chief Cardiologist A’ at the Cardiological Clinic of DTHCA "Hygeia". He is a graduate and holds a PhD from the Medical School of the University of Athens. He specialized in the A’ University Cardiological Clinic at the General Hospital of Athens "Hippokration", where he later served as an Academic Fellow, and has specialized in advanced echocardiographic techniques. He has participated in conferences and has numerous scientific publications and books. Lastly, it is noteworthy that he has received distinctions and awards for his scientific work.

Ο Κούκος Μάρκος είναι Καρδιολόγος και διατηρεί ιδιωτικό ιατρείο στη περιοχή Ζωγράφου. Είναι απόφοιτος της Ιατρικής Σχολής Αθηνών του Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών, ενώ έχει μετεκπαιδευτεί στην υπερηχοκαρδιογραφία στο Imperial College London και στο Hammersmith Hospital. Έχει εξειδικευτεί περαιτέρω στη μαγνητική τομογραφία καρδιάς αποκτώντας πιστοποίηση από το Royal Brompton Hospital, ενώ παράλληλα είναι υποψήφιος διδάκτωρ στην Ιατρική Σχολή Αθηνών. Στην επαγγελματική του πορεία έχει υπηρετήσει ως Επιμελητής Β’ στο Ερρίκος Ντυνάν Hospital Center, ενώ προηγουμένως εργάστηκε ως επικουρικός καρδιολόγος και ειδικευόμενος στην Καρδιολογία στο Γενικό Νοσοκομείο Αθηνών Ευαγγελισμός. Έχει επίσης ολοκληρώσει την ειδικότητα της Παθολογίας στο Γενικό Νοσοκομείο Άρτας, αποκτώντας σφαιρική κλινική εμπειρία στον τομέα της εσωτερικής ιατρικής και της καρδιολογίας.

Kolentinis Mixalis is a Cardiologist and maintains a private practice in Cholargos. He studied at the Medical School of the National and Kapodistrian University of Athens and subsequently served as a Pathology resident at the “General Hospital of Nea Ionia ‘Konstantopouleio’” and as a Cardiology resident at the General Hospital of Athens “Georgios Gennimatas,” completing a continuous seven-year training in a wide range of cardiology cases. Beyond his clinical work, he has been actively involved in research. In 2012, he completed his doctoral dissertation at the Medical School of the University of Ioannina, with a special focus on the physiology of the cardiovascular system in vivo. During his specialty training, he was responsible for the educational and scientific program of the cardiology clinic as well as the echocardiography laboratory. He received further training in echocardiography at Hammersmith Hospital, Imperial College London (NHS). Additionally, he was awarded a scholarship by the Hellenic Cardiological Society for advanced training in Cardiac Magnetic Resonance Imaging (CMR). He worked as a clinical-research fellow at Goethe University in Frankfurt. He holds certification from the Society for Cardiovascular Magnetic Resonance (SCMR) for diagnostics and training in CMR techniques (level III SCMR). He also specialized at the University Hospital of Ioannina in the latest echocardiographic imaging techniques (transesophageal ultrasound, stress echo). He has participated as a speaker at national conferences and seminars and has authored articles and reviews in foreign and international scientific journals. Finally, he is a member of numerous scientific societies and an instructor in cardiopulmonary resuscitation seminars (ALS Instructor).

Georgios Sionis is a Cardiologist and maintains a private practice in Agia Paraskevi. He is a graduate of the Medical School of Pecs in Hungary. Currently, in addition to his private practice, he is a Consulting Physician in the Hemodynamics Department of the Central Clinic of Athens and at Metropolitan General Hospital in Cholargos. The doctor has extensive experience and has specialized in cardiac ultrasound, exercise testing, 24-hour rhythm and blood pressure monitoring (Holter), interventional cardiology, the Coronary Intensive Care Unit (CICU) – Infarction Unit, and the latest echocardiographic techniques. Furthermore, he has participated in numerous conferences and seminars both in Greece and abroad. In his private practice, he manages cases across the entire spectrum of cardiology, understanding the unique needs of his patients.

Ο κ. Χλαπουτάκης Γεώργιος είναι Ειδικός Καρδιολόγος και διατηρεί ιδιωτικό ιατρείο στο Μαρούσι. Ασχολείται με την κλινική καρδιολογία και είναι πιστοποιημένος από το υπουργείο υγείας για υπερηχογραφική εκτίμηση της καρδιακής λειτουργίας. Τον Αύγουστο του 2022, μετά από έντεκα χρόνια επιτυχημένης πορείας ως ιδιώτης καρδιολόγος, ανακαίνισε πλήρως το ιατρείο του με μηχανήματα state of the art στην καρδιαγγειακή απεικόνιση. Έχει τεράστια εμπειρία στην κλινική καρδιολογία, μιας και ειδικεύτηκε στη χώρα μας σε νοσοκομεία αιχμής, εξετάζοντας μεγάλο όγκο ασθενών καθημερινά. Παρακολουθεί στενά τις εξελίξεις στο χώρο της καρδιολογίας, τόσο συμμετέχοντας σε συνέδρια στην Ελλάδα και το εξωτερικό, αλλά και μέσα από συνδρομητικές βάσεις δεδομένων έτσι, ώστε να κατέχει τη σύγχρονη γνώση. Συνεργάζεται με κορυφαίους συναδέλφους σε δημόσια και ιδιωτικά νοσοκομεία, σε περίπτωση που ο ασθενής του χρήζει δευτεροβάθμιας ή τριτοβάθμιας αντιμετώπισης. Ως αθλητής ο ίδιος (συμμετείχε επί σειρά ετών σε ανταγωνιστική ποδηλασία μεγάλων αποστάσεων -7 σπαρτακειάδες και πολυάριθμους αγώνες) είναι δικτυωμένος και δέχεται στο ιατρείο του αθλητές υψηλών επιδόσεων όλων των ηλικιών. Έτσι μπορεί να δώσει χρήσιμες συμβουλές σε όλο το φάσμα των αθλούμενων, από τους αρχάριους, μέχρι και όσους ασχολούνται με τον πρωταθλητισμό. Η μεγάλη του εμπειρία εξασφαλίζει την ασφάλεια στην άθληση, προστατεύοντας από την μία πλευρά τον αθλούμενο από προβλήματα υγείας, αλλά και αποφεύγοντας την αναίτια διακοπή της άσκησης. Είναι επιστημονικός συνεργάτης του ιατρείου υπέρτασης του νοσοκομείου Αθηνών “Ιπποκράτειο”και συνεργάζεται με μεγάλα ιδιωτικά Νοσηλευτικά ιδρύματα, όπως το ΥΓΕΙΑ και το Ιατρικό Αμαρουσίου. Ακόμα διαθέτει πιστοποίηση από το Υπουργείο Υγείας για την υπερηχογραφική εκτίμηση της καρδιακής λειτουργίας. Τέλος είναι μέλος της Ελληνικής Καρδιολογικής Εταιρίας και του Ελληνικού Κολλεγίου Καρδιολογίας. Έχει δημοσιεύσεις σε Ελληνικά και ξένα περιοδικά, καθώς έχει λάβει μέρος σε διεθνείς πολυκεντρικές μελέτες.

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.

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.

Karampekos Dimitrios is a Specialist Cardiologist and maintains a private practice in Palaio Faliro. He is a member of the Hellenic and European Society of Cardiology, a scientific collaborator at the Athens Medical Center – Palaio Faliro Clinic, and the scientific director of the Cardiology Department at the Biomedical Korydallos. He completed his specialty in Cardiology at one of the largest hospitals in Athens, the General State Hospital of Nikaia, thus acquiring significant clinical experience in managing acute and chronic cardiology cases. His private practice provides high-level services using modern diagnostic tools (echocardiography, cardiac rhythm Holter, blood pressure Holter). Additionally, he has substantial experience in various therapeutic areas, including arterial hypertension, hyperlipidemia, arrhythmia management, coronary artery disease, heart failure, preschool and pre-athletic screening.

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. 

Gkeka Marina is a Cardiologist and maintains a private practice in Nea Filadelfeia. She is a graduate of the Medical School of Aristotle University of Thessaloniki. She initially specialized in Internal Medicine at the General Hospital of Attica "Sismanogleio - Amalia Fleming" and subsequently in Cardiology at the General Hospital of Nea Ionia "Konstantopouleio." She has served as a Cardiologist in the Infarction Unit of the General Hospital of Nea Ionia "Konstantopouleio," as well as a consulting Cardiologist at the private hospital MITERA. Additionally, she has held the position of Registrar B' - Cardiologist at the General Hospital of Thira. In her private practice, she offers a wide range of services, respecting the unique needs of each patient.

Parisis Dimitrios is a Cardiologist and maintains a private practice in Rafina and Pallini. In his practice, he provides high-level services in all areas of cardiology.

Papageorgiou Xristos is a Cardiologist and maintains a private practice in Ampelokipi. He holds a PhD and is a graduate of the Medical School of the National and Kapodistrian University of Athens. He specialized at Alexandra General Hospital - Therapeutic Clinic of the Medical School of the National and Kapodistrian University of Athens and at the 251 Air Force General Hospital, obtaining his Cardiology specialty title in 2021. Concurrently, he holds the European Diploma in Cardiology and the Certification in Interventional Cardiology from the European Association of Percutaneous Cardiovascular Interventions. He undertook further training in interventional cardiology at university hospitals in the United Kingdom and Italy under a scholarship from the European Association of Percutaneous Cardiovascular Interventions. He has worked as a Specialist Cardiologist at Metropolitan General Hospital and at Errikos Dynan Hospital, where he currently serves as an external associate of the Second Cardiology Clinic. Throughout his career, he has gained significant experience across the full spectrum of clinical and interventional cardiology, having performed numerous interventional procedures. He has over 40 published scientific papers and presentations in international scientific journals and international cardiology conferences. He is an active member of the European Society of Cardiology, the European Association of Percutaneous Cardiovascular Interventions, the Hellenic Cardiological Society, and the Panhellenic Medical Association.

Ο Χρήστος Μαντής είναι Επεμβατικός Καρδιολόγος και διατηρεί ιδιωτικό ιατρείο στο Μαρούσι Αττικής. Παράλληλα, από τον Οκτώβριο του 2021 υπηρετεί ως Επιμελητής στο Γενικό Νοσοκομείο Αθηνών «ΚΑΤ», όπου δραστηριοποιείται στο Αιμοδυναμικό Εργαστήριο και συμμετέχει στην αντιμετώπιση του συνόλου των καρδιολογικών περιστατικών σε ένα από τα μεγαλύτερα νοσοκομεία της χώρας ως προς τον όγκο ασθενών. Επιπλέον, συνεργάζεται με μεγάλα ιδιωτικά νοσηλευτικά ιδρύματα.

Είναι απόφοιτος της Ιατρικής Σχολής του Πανεπιστημίου Ιωαννίνων και κάτοχος Μεταπτυχιακού Διπλώματος Σπουδών στην Καρδιοαναπνευστική Αναζωογόνηση από το Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών. Ειδικεύτηκε στην Καρδιολογία στο Γενικό Νοσοκομείο Νέας Ιωνίας «Κωνσταντοπούλειο» και στη συνέχεια εκπαιδεύτηκε στη διαχείριση οξέων και χρόνιων στεφανιαίων συνδρόμων, καθώς και στις επεμβατικές τεχνικές στεφανιογραφίας και αγγειοπλαστικής, αποκτώντας τον επίσημο τίτλο εξειδίκευσης στην Επεμβατική Καρδιολογία από το Κεντρικό Συμβούλιο Υγείας (ΚΕΣΥ).

Έχει δημοσιεύσει επιστημονικές εργασίες σε διεθνή περιοδικά και συμμετέχει ενεργά με ομιλίες και παρουσιάσεις σε σημαντικά ελληνικά και ευρωπαϊκά επιστημονικά συνέδρια.

Η πολυετής παρουσία του στο Εθνικό Σύστημα Υγείας αντικατοπτρίζει την εκτενή κλινική του εμπειρία και την ικανότητά του να παρέχει ολοκληρωμένη και υπεύθυνη καρδιολογική φροντίδα σε όλο το φάσμα των καρδιολογικών παθήσεων. Βασική του προτεραιότητα αποτελεί η εξατομικευμένη προσέγγιση κάθε ασθενούς, με έμφαση στην κατανόηση των ιδιαίτερων αναγκών και προβλημάτων του.

Andreas Tsoumeleas is an Interventional Cardiologist and the scientific director of the Health Diagnosis multi-specialty clinic. He is also the head of the Cardiology Department at the Athens Therapy Center, an Interventional Cardiologist at the Athens Bioclinic, and an external collaborator with the "HYGEIA" and "IASO GENERAL" Hospitals. He holds a degree in Medicine from the Medical School of the National and Kapodistrian University of Athens (NKUA), graduating with honors ("very good"). He completed his specialization in Cardiology, which included two years of Internal Medicine at the 2nd University Internal Medicine Clinic of the G.N.A. "Hippokration" and four years of Cardiology at the 2nd Cardiology Clinic of the General Hospital of Athens "Korgialeneio - Benakeio Hellenic Red Cross." He obtained his Cardiology specialty title in 2019. Subsequently, he specialized and participated for two years in the full scope of Interventional Cardiology (coronary angiographies, angioplasties, bifurcation lesions, heavily calcified lesions, rotational atherectomy, chronic total occlusions) at the Hemodynamics Laboratory of the "Red Cross" Hospital. He is a member of the Hellenic Cardiological Society (HCS) and the European Society of Cardiology (ESC). Finally, he is a member and ALS instructor at the Hellenic Cardiopulmonary Resuscitation Society (HCRS) and the European Resuscitation Council (ERC).

Tsaggaris Adamantios is an Interventional Cardiologist, maintains a private practice in Marousi, and serves as a Cardiologist Consultant at the Red Cross (Korgialeneio - Benakeio EES). He graduated from the Medical School of the National and Kapodistrian University of Athens. He specialized in Pathology at Rutgers New Jersey Medical School in the USA. He specialized in Cardiology at the University of Minnesota in the USA. He completed subspecialty training in interventional cardiology and structural cardiology (TAVI, MitraClip, Watchman) at the University of Minnesota in the USA (worked at VA MPLS, Fairview Hospital, Southdale Hospital). He is a Diplomate of the American College of Cardiology. He has been awarded, following examinations, the American Subspecialty Certificates in Cardiology (ABIM-Cardiology) and Interventional Cardiology (ABIM-Interventional Cardiology). He is board certified in echocardiography (National Board of Echocardiography). He has published papers in international scientific journals and has presented at Greek, American, and European conferences. He is a member of the American College of Cardiology as well as the Hellenic Cardiological Society. In his practice, he manages cases covering the entire spectrum of cardiology and specializes in coronary artery disease and valvular heart diseases (interventional and structural cardiology).

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.

Radamanthys Mparounis, MD is a Cardiologist with a private practice in Ano Patisia. He graduated from the Medical School of the University of Athens. After completing his military service, he worked as a resident in France (Paris) at the university hospitals “Broussais” and “Louis Mourier,” in the departments of Cardiology and Pathology, respectively. He subsequently continued his specialty training in Pathology and then Cardiology at the General Hospital of Athens "Konstantopouleio - Patision" and the General Hospital of Athens "Evangelismos." Since 2018, he has been practicing as a private physician, and since 2019, he has been affiliated with «SOS Doctors». He holds the European Cardiology Diploma (ESC–EECC) and is trained in modern ultrasound techniques at the Onassis Cardiac Surgery Center.

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.