Gastroenterologists with experience in Bowel polyps in Attica

Georgios Anagnostopoulos is a Gastroenterologist who sees patients in Marousi at the "Mitera" Clinic. He holds a medical degree from the Medical School of the National and Kapodistrian University of Athens and completed his Gastroenterology specialty at the 251 General Air Force Hospital. In 2002, he received a scholarship from the Hellenic Society of Gastroenterology and pursued advanced training as an Advanced Endoscopy Research Fellow at the Wolfson Digestive Diseases Centre, University of Nottingham, UK, and the Endoscopy Department, University of Mainz, Germany. His training focused on advanced micro-endoscopic diagnostic and therapeutic techniques such as magnifying endoscopy, chromoendoscopy, Narrow Band Imaging, confocal endomicroscopy, autofluorescence endoscopy, endoscopic mucosal resection, and photodynamic therapy for Barrett’s esophagus. A considerable number of his studies have been published in reputable peer-reviewed international medical journals. He has more than 100 presentations at Greek and international conferences and continues to frequently publish articles in the Greek press. It is noteworthy that his primary interests include the monitoring of patients with Barrett’s esophagus and ulcerative colitis, as well as the endoscopic evaluation of patients with precancerous lesions in the gastrointestinal tract (dysplasia). Furthermore, he specializes in complex polypectomies of flat polyps (endoscopic mucosal resection), ablation of Barrett’s esophagus epithelium using radiofrequency ablation (HALO), and obesity treatment through the revolutionary endoscopic AspireAssist method.

Dr. Petros Stathopoulos is a Gastroenterologist and Interventional Endoscopist with extensive clinical, academic, and research experience gained in leading university hospitals in Germany. Since 2026, he has been affiliated with the 3rd Department of Gastroenterology at HYGEIA Hospital in Athens. Prior to this, he served as Deputy Head of the Endoscopy Unit and Consultant Gastroenterologist at the University Hospital of Marburg, Germany.He graduated from the Medical School of the National and Kapodistrian University of Athens and completed his specialty training in Internal Medicine and Gastroenterology in Germany. His clinical expertise encompasses the full spectrum of diagnostic and therapeutic gastrointestinal endoscopy, including advanced procedures such as Endoscopic Submucosal Dissection (ESD), Endoscopic Full-Thickness Resection (eFTR), Endoscopic Ultrasound (EUS), ERCP, and the management of complex gastrointestinal neoplasms.Dr. Stathopoulos has received advanced training at internationally renowned centers, including Keio University Hospital in Tokyo, Japan, and Hôpital Édouard Herriot in Lyon, France, with a special focus on advanced endoscopic resection techniques. He has also played a key role in the certification and quality assurance processes of multidisciplinary oncology centers specializing in pancreatic and colorectal cancer.His scientific work includes numerous publications in peer-reviewed international journals and presentations at major European gastroenterology and endoscopy conferences. He is an active member of several prestigious scientific societies, including the German Society of Gastroenterology (DGVS), the European Society of Gastrointestinal Endoscopy (ESGE), and the German Society for Endoscopy and Imaging Techniques (DGE-BV).

Varytimiadis Lazaros MD, MSc, FEBGH, PhD is a Gastroenterologist - Interventional Endoscopist, Deputy Director of the Gastroenterology Clinic and Endoscopy Department at MITERA Hospital, and maintains private practices in Pefki and Athens. He received a scholarship from the Hellenic Society of Gastroenterology and completed advanced training in Interventional Gastrointestinal Endoscopy at Queen Alexandra Hospital, where he was later appointed and worked as a Consultant. He specialized in Gastroenterology at the General Hospital of Athens "Evangelismos - Athens Ophthalmological Clinic - Polyclinic," as well as in Internal Medicine at the General Prefectural Hospital of Edessa. In 2017, he was recognized as a Fellow of the European Board of Gastroenterology and Hepatology (FEBGH). Additionally, he holds a PhD from the National and Kapodistrian University of Athens, with a dissertation focused on the removal of precancerous lesions (polyps) from the gastrointestinal tract. He completed a postgraduate MSc program in Crisis Management at the National and Kapodistrian University of Athens and graduated with honors from the Victor Babes University of Medicine and Pharmacy in Romania. It is noteworthy that his main clinical interests include complex polypectomies of large polyps (EMR, pEMR, ESD), monitoring patients with Barrett’s esophagus, and Inflammatory Bowel Diseases. Furthermore, he has participated in numerous national and international conferences, workshops, and advanced training seminars, has received scholarships and awards for best scientific presentations, and has delivered oral presentations and posters at various scientific meetings.

Ο Κουμούτσος Ιωάννης είναι Γαστρεντερολόγος και διατηρεί ιδιωτικό ιατρείο στη Νέα Ερυθραία. Είναι πτυχιούχος Ιατρικής Πανεπιστημίου Πατρών και κάτοχος με Άριστα μεταπτυχιακού τίτλου σπουδών (ΜSc) από το Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών με αντικείμενο τη «Διαχείριση Κρίσεων και Μαζικών Καταστροφών» και πτυχιακή εργασία με θέμα «Μετανάστευση και Ηπατίτιδες στην Ελλάδα». Ειδικεύθηκε στην Γαστρεντερολογία στο 417 ΝΙΜΤΣ (Νοσηλευτικό Ίδρυμα Μετοχικού Ταμείου Στρατού) και είναι κάτοχος Ευρωπαϊκού Διπλώματος Γαστρεντερολογίας και Ηπατολογίας (European Board of Gastroenterology and Hepatology), κατόπιν εξετάσεων. Το 2014 έλαβε υποτροφία από την Ελληνική Γαστρεντερολογική Εταιρεία για μετεκπαίδευση στην Επεμβατική Θεραπευτική Ενδοσκόπηση και Ενδοσκοπικό Υπέρηχο (ΕUS) στη Μεγάλη Βρετανία(UK). Κατόπιν επιτυχούς ολοκλήρωσης της μετεκπαίδευσης του, διατέλεσε επί τριετίας επιμελητής Γαστρεντερολογίας στο Guys & St. Thomas Hospital, εξειδικευμένο κέντρο αναφοράς για τις ιδιοπαθείς φλεγμονώδεις νόσους εντέρου (ΙΦΝΕ - νόσο του Crohn και Ελκώδη Κολίτιδα) στην Μεγάλη Βρετανία, όπου απέκτησε εκτεταμένη εμπειρία στην διαχείριση ασθενών με ΙΦΝΕ. ​Από το 2018 έως και το 2023 εργάστηκε ως Επιμελητής γαστρεντερολογίας στη Γαστρεντερολογική κλινική του Southend University Hospital, Mid & South Essex Foundation Trust, όπου και διατέλεσε επιστημονικά υπεύθυνος του τμήματος ΙΦΝΕ (Ιδιοπαθείς Φλεγμονώδεις Νόσοι Εντέρου) με ενεργό συμμετοχή σε ερευνητικά προγράμματα. Από το 2021 έως το 2023 διατέλεσε Συντονιστής Διευθυντής Ενδοσκοπικού τμήματος του Southend University Hospital, με ιδιαίτερο ενδιαφέρον τόσο στην επεμβατική ενδοσκόπηση όσο και την δημιουργία επιστημονικών πρωτοκόλλων για την ταχύτερη και αποτελεσματικότερη διαχείριση ασθενών. Από το 2023 είναι επιστημονικής συνεργάτης του νοσοκομείου Ιασώ όπου πραγματοποιεί θεραπευτικές επεμβατικές ενδοσκοπικές πράξεις. ​Διαθέτει πολυετή και πλούσια επαγγελματική εμπειρία στην διαχείριση ασθενών με οξείες και χρόνιες παθήσεις του πεπτικού ενώ παράλληλα πραγματοποιώ διαγνωστική και θεραπευτική ενδοσκόπηση συμπεριλαμβανομένου εξειδικευμένων επεμβατικών ενδοσκοπικών εξετάσεων, όπως η ενδοσκοπική παλίνδρομη χολαγγειοπαγκρεατογραφία (ERCP) και ο ενδοσκοπικός υπέρηχος (EUS), πολυπεκτομές, ενδοσκοπικές διαστολές και τοποθέτηση ενδοσκοπικών προσθέσεων (stenting).

Maria-Theodora Koutroumpi, MD, MSc, is a Gastroenterologist – Interventional Endoscopist with a private practice in Patima, Halandri. She is an affiliated Consultant at the 2nd Gastroenterology Clinic of YGEIA Hospital. Additionally, she performs endoscopies at Affidea Kifisia (contracted with EOPYY) and the private REA clinic. She has significant clinical and endoscopic experience, having performed over 1,600 endoscopies during her specialty training at the General Hospital of Athens "Georgios Gennimatas," and she has also worked as a resident Physician at the General Hospital of Nafplio. She graduated from the Medical School of the University of Patras and holds an MSc from the National and Kapodistrian University of Athens in Human Neoplastic Disease. She participates in international conferences and has been trained in modern endoscopic techniques, such as gastric capsule endoscopy. She has a particular interest in idiopathic inflammatory bowel diseases and interventional endoscopy, emphasizing a personalized and humane approach to each patient.

Pontas Xristos is a Gastroenterologist and maintains his private practice in Athens. He has served as a Senior Clinical Fellow in Acute General Medicine at the Royal Free Hospital Hampstead NHS Trust and as a Clinical Fellow in the Gastroenterology and Endoscopy Department of the same hospital in London. It is noteworthy that he was awarded a UEG (United European Gastroenterology) Scholarship as well as a Scholarship from the Hellenic Gastroenterological Society. Currently, he serves as a Consultant in the Gastroenterology Clinic at Mitera Hospital.

Kouloumpis Xaris is a Gastroenterologist and maintains a private practice in Aigaleo. He is a graduate of the Medical School of the National and Kapodistrian University of Athens and has worked at the General Hospital of Athens "Evangelismos." He possesses significant and extensive experience and specializes in hepatology, endoscopic gastroenterology, and digestive oncology. In his private practice, he offers a wide range of services, tailored to the needs of each patient.

Karatzas Pantelis is a Gastroenterologist who maintains a private practice in the Ampelokipoi area. He completed his doctoral dissertation at the National and Kapodistrian University of Athens and holds a Medical degree from the same university. He received advanced training in Gastrointestinal Endoscopy at the University of Hamburg, Germany, and specialized in Gastroenterology at "Evangelismos" Hospital and in General Pathology at the General Hospital of Chalkida. He is a university fellow at the University Gastroenterology Clinic of the General Hospital of Athens "Laiko" and has served as a scientific collaborator at the University Hepatogastroenterology-Endoscopy Unit of the University General Hospital “Attikon.” Furthermore, he is a member of numerous scientific societies, has attended numerous Greek and international conferences, participated in many specialized seminars, and has publications and written presentations both in Greece and abroad.

Dr. Zogas Nikolaos is a Gastroenterologist - Hepatologist with a clinic in Kallithea and an external collaborator of some of the largest private clinics in Athens where he performs endoscopy. He graduated from the University of Udine in Italy. He served as Director at the Department of Pathology and Gastroenterology of the University Hospital in Umeå, Västerbotten, Sweden, where he obtained two specialty titles (recognized by the Greek Authorities): Gastroenterology - Hepatology and Internal Medicine. Additionally, he is a PhD candidate at the University of Umeå, where he also served as a trainer for medical residents and nurses at the Medicinkliniken and holds, among others, certification from the two-year program Grundläggande Forskningsmetodik för läkare. He has many years of experience in monitoring hepatology patients and is particularly specialized in clinical (ulcerative colitis, Crohn's disease, diarrheal syndromes, constipation, celiac disease, Helicobacter pylori, collagenous gastritis, etc.) and interventional gastroenterology with numerous difficult endoscopies, polypectomies, and other interventional procedures. He has specific expertise in interventional procedures such as large polyp polypectomies with EMR, balloon enteroscopy (double or single balloon enteroscopy), esophageal variceal ligation, dilation of gastrointestinal strictures, gastrostomy placement (PEG), and others. He served as a consultant in the Gastroenterology Department of the hospital "Elpis" until the end of 2020.

Lazaridis Lazaros - Dimitrios is a Gastroenterologist and serves as Consultant in the Gastroenterology – Hepatology Clinic at Metropolitan General in Cholargos. He also maintains a private practice at the Pharos of Neo Psychiko. He studied Medicine at the National and Kapodistrian University of Athens and specialized in Gastroenterology - Hepatology at the University General Hospital “Attikon.” Beyond the national exams for obtaining the Gastroenterology specialty title, he participated in the activities of the 14th Hepatology School of the Hellenic Association for the Study of the Liver and was awarded following his participation in the examinations. He was awarded a Doctorate from the Medical School of the National and Kapodistrian University of Athens in 2017 with a grade of “Excellent.” He completed his doctoral thesis at the 2nd University Pathology Clinic of the University General Hospital “Attikon” focusing on the role of the inflammasome in idiopathic inflammatory bowel diseases. He is the author of more than 15 scientific articles in reputable international scientific journals. He has participated as an invited speaker at Greek conferences and has been part of the authorship team in nearly 50 presentations at international and Greek conferences. He has actively participated in multicenter clinical studies. He has taught students at the National and Kapodistrian University of Athens within the framework of undergraduate courses. He fulfilled his mandatory rural service as a physician at the General Hospital of Trikala in the Regional Clinic of “Koniskos” and served as a Pathology specialty trainee at the General Hospital of Athens “Sismanogleio,” as part of his training for the Gastroenterology specialty. Finally, he fulfilled his military obligations as a unit doctor in the Hellenic Army, serving at the 95th National Guard Reconnaissance Squadron (95 EAΝΕΘ) in Gennadi, Rhodes.

Dr. Zaxou Maria is an External Collaborator at the private hospitals "Lefkos Stavros" and "Mediterraneo" and a PhD candidate at the Medical School of Athens - NKUA, focusing on hydrocolonoscopy and new techniques for the removal of colorectal polyps. She is actively engaged in clinical research and has participated in Greek and international conferences, including the Pan-European UEG 2023, where she was awarded for the COLDWATER study. She is specialized in the management of Irritable Bowel Syndrome (IBS) and is a member of the educational committee of the Rome Foundation. In her private practice, she addresses the full spectrum of Gastroenterology (e.g., Crohn’s disease, ulcerative colitis, Helicobacter pylori infection, GERD, dyspepsia, etc.) and performs gastroscopies and colonoscopies using state-of-the-art equipment, ensuring painless and safe procedures.

Το Πολυϊατρείο Affidea Περιστερίου είναι ένα σύγχρονο πολυϊατρείο που εξυπηρετεί ασθενείς από την ευρύτερη δυτική Αθήνα, προσφέροντας ολοκληρωμένη πρωτοβάθμια και εξειδικευμένη φροντίδα υγείας κάτω από μία οροφή. Με εξειδικευμένους ιατρούς σε ένα πλατύ φάσμα ειδικοτήτων, το κέντρο καλύπτει τις ανάγκες ολόκληρης της οικογένειας - από προληπτικούς ελέγχους έως εξειδικευμένη διάγνωση και παρακολούθηση.