Gastroenterologists in the Northern suburbs of Athens

Grammenos Ioannis is a Gastroenterologist who maintains a private practice in Nea Ionia. Simultaneously, he serves as a Specialist Scientific Collaborator at the Central Clinic of the Athens Medical Center. He graduated with honors from the Medical School of the University of Rome and specialized in Gastroenterology - Hepatology at the 2nd Internal Medicine Clinic of the General Hospital of Athens "Evangelismos." Furthermore, he holds a PhD with a dissertation titled "The absorption of fructose and sorbitol in normolactasic and hypolactasic healthy adults." He also has a notable research portfolio with scientific publications in conferences and scientific journals. Finally, the doctor has participated in numerous medical conferences both in Greece and abroad.

Ο Πετρίδης Ιωάννης είναι Γαστρεντερολόγος, πτυχιούχος της Ιατρικής Σχολής του Πανεπιστημίου L’Aquila Ιταλίας. Το 2001, κατόπιν διεξαγωγής κρατικών εξετάσεων, όπου και του απονεμήθηκε υποτροφία, ξεκίνησε την ειδικότητα στην Γαστρεντερολογία και Ενδοσκόπηση του Πεπτικού στην Πανεπιστημιακή Γαστρεντερολογική Κλινική του Πανεπιστημίου της L’Aquila Ιταλίας, την οποία και ολοκλήρωσε το 2005 με την μέγιστη βαθμολογία (50/50 magna cum laude). Το 2006 ξεκίνησε την μετεκπαίδευσή του πάνω στον τομέα της Ηπατολογίας και στον τομέα μεταμοσχεύσεων συμπαγών οργάνων (Fellowship in Transplant Hepatology) στο εξειδικευμένο κέντρο έρευνας και μεταμοσχεύσεων ISMETT του Πανεπιστημίου του Pittsburgh στην Ιταλία, ένα από τα μεγαλύτερα κέντρα μεταμοσχεύσεων συμπαγών οργάνων της Ιταλίας, στο οποίο εργάστηκε διατελώντας όλα αυτά τα χρόνια σημαντικό κλινικό και ερευνητικό έργο. Το 2011 έγινε Διδάκτωρ της Ιατρικής Σχολής του Πανεπιστημίου του Palermo στην Ιταλία με βαθμολογία: 70/70, "Άριστα" και το 2013 ανακηρύχθηκε Διπλωματούχος Μεταπτυχιακού προγράμματος στην Διοίκηση, Οργάνωση και Κλινική διαχείριση στην μεταμόσχευση ήπατος που συστάθηκε στο Πανεπιστήμιο Cattolica del Sacro Cuore της Ρώμης στην Ιταλία. Από τον Σεπτέμβριο του 2022 έχει επιστρέψει στην Ελλάδα και είναι επιστημονικός συνεργάτης του Ιατρικού Κέντρου Αθηνών και του "Ερρίκος Ντυνάν" Hospital Center. Επίσης, από τον Ιούλιο 2023 έχει ξεκινήσει συνεργασία με τον Εθνικό Οργανισμό Μεταμοσχεύσεων της Ελλάδος (Ε.Ο.Μ.), αναλαμβάνοντας την θέση του Τοπικού Συντονιστή Μεταμοσχεύσεων στο Γενικό Νοσοκομείο Αθηνών "Ευαγγελισμός" και από τον Ιανουάριο 2024 στο Γενικό Νοσοκομείο Αττικής ΚΑΤ. Έχει πολύχρονη εμπειρία στην αντιμετώπιση παθήσεων του πεπτικού συστήματος. Επιπροσθέτως, το 2023 - 24 εκπαιδεύτηκε στο Ακτινολογικό και Ενδοσκοπικό τμήμα του Νοσοκομείου "Γεννηματάς" για την απόκτηση τίτλου εξειδίκευσης και την χορήγηση άδειας εκτέλεσης υπερήχων ειδικότητας Γαστρεντερολογίας από το Υπουργείο Υγείας. Σε συνδυασμό με την συνεχιζόμενη δια βίου εκπαίδευση και ενημέρωσή του στις σύγχρονες προκλήσεις και εξελίξεις στην Ηπατολογία και στην Γαστρεντερολογία στοχεύει στην ολοκληρωμένη και πάντα εξατομικευμένη προσφορά των ιατρικών υπηρεσιών του. Από το 2009 του έχει απονεμηθεί ο τίτλος του "Clinical Instructor of Medicine" από την Ιατρική Σχολή του Πανεπιστημίου του Pittsburgh των Ηνωμένων Πολιτειών της Αμερικής. Έχει αξιόλογο συγγραφικό έργο και πλήθος δημοσιεύσεων στην Ελλάδα και στο εξωτερικό. Έχει πλούσια επιστημονική δραστηριότητα με συμμετοχή σε ελληνικά και διεθνή συνέδρια με παρουσίαση εργασιών, δημοσιεύσεις σε εγχώρια και διεθνή περιοδικά και συμμετοχή ως κύριος ερευνητής σε εγχώριες και διεθνείς πολυκεντρικές μελέτες. Τέλος, τελεί Ιατρικός Συνεργάτης της ιταλικής πρεσβείας στην Αθήνα.

Tzitzi Dimitra is a Gastroenterologist who has maintained a private practice in Chalandri since 1992. She is a graduate of the Medical School of Aristotle University of Thessaloniki with a degree grade of "excellent." She was a scholarship recipient of the State Scholarships Foundation for every academic year and obtained the specialty title in Gastroenterology. She served as a Consultant in the Endoscopy Department of the 1st IKA Hospital for a decade. She has a fully equipped office and performs esophagogastroscopies, rectoscopies, proctoscopies, colonoscopies, abdominal ultrasounds, and endoscopic polypectomies of the stomach and large intestine. Additionally, she provides treatment for gastroesophageal reflux disease – Barrett's esophagus – and inflammatory bowel diseases such as ulcerative colitis and Crohn's disease. Finally, she has participated in numerous scientific papers presented in Greek and international scientific journals and is a member of Greek and European medical associations.

Karlaftis Anastasios MD is a Gastroenterologist - Hepatologist and maintains a private practice in Metamorfosi, while also collaborating with the endoscopy department of the diagnostic center "Ionio Iatriki." He is a PhD candidate at the University Gastroenterology Clinic of the Medical School of the University of Athens and a graduate of the Medical School of Aristotle University of Thessaloniki. He specialized in the Gastroenterology Clinic of the General Hospital of Athens "G. Gennimatas" and has worked in major hospitals such as the General Hospital of Athens "Laiko," the General Hospital of Athens "Alexandra," and the General Hospital of Chania "Agios Georgios." The physician has participated in numerous scientific meetings and seminars and has numerous presentations in both foreign-language and Greek-language conferences. Additionally, he has several publications in Greek and international journals. During his tenure in university clinics, he has also contributed to teaching by delivering numerous lessons to medical students. Finally, despite practicing private medicine, he continues his research and writing activities, and recently his first book was published, entitled "Modern Guidelines in Gastroenterology and Hepatology."

Zlatinoudis Xaralampos is a Gastroenterologist-Hepatologist who maintains a private practice in Argyroupoli. Simultaneously, he provides his services at Metropolitan General in Cholargos, with his office located at the headquarters of the 3rd Gastroenterology and Hepatology Clinic. He is a graduate of the Medical School of the National and Kapodistrian University of Athens and holds a Master's degree in "Health Units Management." He has obtained the European Diploma in Gastroenterology and Hepatology (ESEGH) and the Membership of the Royal Colleges of Physicians of the United Kingdom diploma – MRCP(UK). He has specialized in endoscopic ultrasound (EUS), having received official recognition from the Ministry of Health. The physician has attended endoscopic seminars of the Joint Advisory Group on GI Endoscopy (JAG) of the Royal College of Physicians in the United Kingdom as well as those of the Hellenic Gastroenterological Society and has completed the Hepatology School of the Hellenic Liver Study Society. He earned the specialty title in Gastroenterology after training in university hospitals of the Northern Deanery in the United Kingdom and in Greece (Metaxa Cancer Hospital of Piraeus). Through a scholarship from the UEG organization, he participated as a visiting Consultant in the activities of the Gastroenterology department of Clinical Hospital Center Rijeka, which is one of the European Gastroenterology Centres of Excellence and a certified center for the interdisciplinary and holistic management of obesity by the European Association for the Study of Obesity (EASO). The physician manages a wide range of cases and possesses broad expertise, providing high-level services with modern, high-definition technological equipment.

Το Affidea Νέας Ερυθραίας αποτελεί το ολοκληρωμένο ιατρικό κέντρο της περιοχής, με εξαιρετικά πλούσιο φάσμα ιατρικών ειδικοτήτων. Ξεχωρίζει για τις εξειδικευμένες χειρουργικές υπηρεσίες, την ουρολογία με δυνατότητα κυστεοσκόπησης, τη νεφρολογία και τις προηγμένες αγγειοχειρουργικές παρεμβάσεις - ένας πλήρης ιατρικός προορισμός για κάθε ανάγκη.

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.

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.

Tyrmpas Ioannis is a Gastroenterologist-Interventional Endoscopist with private practices in Korydallos and Marousi. He holds a degree and is a PhD candidate at the Medical School of the National and Kapodistrian University of Athens. He has received specialized training in Endoscopic Ultrasound (EUS) and Interventional Endoscopy at the University Hospital "The Royal Infirmary of Edinburgh" in the United Kingdom, where he also worked as a Locum Consultant and holds the "Diploma of the European Board of Gastroenterology and Hepatology." He is the Director of the 1st Gastroenterology Interventional Endoscopy Clinic at IASO and the scientific head of the state-of-the-art endoscopy department at the General Clinic of IASO. Dr. Tyrmpas has numerous oral and poster scientific presentations at international and Greek conferences, as well as publications in international and Greek gastroenterological scientific journals. Finally, he is a member of the Medical Association of Athens and Cyprus, the Hellenic Society of Gastroenterology, the Professional Association of Gastroenterologists of Greece, the British Society of Gastroenterology, the European Society of Gastrointestinal Endoscopy (ESGE), and Euro-EUS.

Matina - Lydia Xatzinikolaou MD, PhD is a Gastroenterologist who sees patients in Cholargos at Metropolitan General Hospital. She graduated from the Athens College and subsequently studied Medicine at Nottingham University in England. She holds a PhD from the National and Kapodistrian University of Athens. She completed further training in Inflammatory Bowel Diseases at the Royal Free Hospital in London, after completing her specialty in Gastroenterology at the Athens Anti-Cancer - Oncology Hospital "Agios Savvas." She works as a Consultant in the Advanced Therapeutic Endoscopy Clinic at Metropolitan General Hospital and is a Scientific Associate of the Gastroenterology Unit at the Athens Chest Diseases Hospital "Sotiria," with her primary specialization in inflammatory bowel diseases. She actively participates in Greek and international conferences and has authored scientific publications. Finally, she is a member of the Athens Medical Association, the Hellenic Gastroenterological Society, the Hellenic Group for the Study of Inflammatory Bowel Diseases, and the European Crohn's and Colitis Organisation.

Kalantzis Ioannis is a Gastroenterologist and Doctor of Medicine at the Medical School of the National and Kapodistrian University of Athens. He serves as a Consultant in the 1st Gastroenterology Clinic of Interventional Endoscopy at IASO Hospital, where he receives patients and performs endoscopic procedures. He graduated from the Medical School of Democritus University of Thrace. He specialized in Internal Medicine at the Pathology-Oncology Clinic of the Unified Anticancer Hospital of Piraeus "Metaxa," managing the full spectrum of pathological and oncological diseases. Subsequently, he completed his Gastroenterology specialty at the General Hospital of Athens "Korgialeneio-Benakeio / Hellenic Red Cross," during which he performed over 3,000 diagnostic and therapeutic endoscopic procedures of the upper and lower gastrointestinal tract and biliary system. He acquired particular expertise in endoscopic polypectomy of the stomach, duodenum, and colon, in endoscopic retrograde cholangiopancreatography (ERCP), in endoscopic gastrostomy placement, as well as in the management and treatment of patients with Inflammatory Bowel Diseases (Crohn's Disease and Ulcerative Colitis). He completed with distinction the Master’s Program (MSc) of the National and Kapodistrian University of Athens titled "Neoplastic Disease in Humans: Diagnosis, Contemporary Therapy, and Research," as well as his Doctoral Thesis (PhD) on "Clinicopathological differences and correlations between cancer of the right and left colon." He has participated in international clinical studies, attended numerous conferences, educational courses, and seminars, and has numerous presentations and publications in Greek and international conferences and journals. Finally, he is a member of the Hellenic Gastroenterology Society and the Hellenic Society for the Study of the Liver.

Sioulas Athanasios MD, PhD, FEBGH is a Gastroenterologist with a private practice in Chalandri. He holds a doctorate from the Medical School of the National and Kapodistrian University of Athens and is also a graduate of the same institution. He completed his specialty training in Gastroenterology at the Hepatogastroenterology Unit of the 2nd Propaedeutic Medical Clinic of the University General Hospital "Attikon" and subsequently undertook advanced training as a fellow of the Hellenic Gastroenterology Society in the Endoscopy Department of the Universitätsklinikum Hamburg - Eppendorf (UKE) in Hamburg, Germany. His advanced training focused on diseases of the pancreas and biliary tract with an emphasis on endoscopic diagnostic and therapeutic techniques (ERCP, cholangioscopy). In addition to his clinical activities, Dr. Sioulas has a special interest in basic and clinical research in the field of gastroenterology, with numerous publications in reputable international scientific journals and presentations at Greek and international conferences. Currently, he practices general gastroenterology and hepatology, covering the entire spectrum of digestive system diseases, with an emphasis on endoscopic diagnostic and therapeutic methods. He works closely with leading surgeons, oncologists, radiologists, and radiotherapists to provide his patients with high-quality services in accordance with current clinical guidelines. Finally, Dr. Sioulas is a member of the Hellenic Gastroenterological Society, the European Board of Gastroenterology and Hepatology, and the European Society of Gastrointestinal Endoscopy.

Xiotakakou Euterpi is a Gastroenterologist - Hepatologist who maintains private practices in Ampelokipoi, Marousi, as well as in Peristeri, where she can be consulted at the Medical Center - Peristeri Clinic. She graduated from the Medical School of the National and Kapodistrian University of Athens and completed her specialization in Gastroenterology at the General Hospital of Athens "Evangelismos" and in London, at clinics such as St. Mark’s Hospital, Ealing Hospital, and Whipp’s Cross Hospital. Currently, she is Head of the Functional Bowel Disorders Department at the Athens Medical Center in Marousi and a member of the multidisciplinary team managing obese patients, led by surgeon Dr. K. Konstantinidis, who holds official certification from the World Federation for the Surgery of Obesity and Metabolic Disorders. Furthermore, she collaborates with multiple clinics in the Attica region, has served as a Consultant in hospitals in Greece and London, and has amassed significant professional experience in her field. Finally, she is specialized in gastroenterological conditions such as irritable bowel syndrome, upper and lower gastrointestinal endoscopies (both diagnostic and interventional), esophageal manometry, and 24-hour esophageal pH impedance monitoring.

Mparmpounakis Panagiotis is a Gastroenterologist - Hepatologist with private practices in Neo Psychiko and Salamina. Additionally, he sees patients at the outpatient clinics of Iatriko Psychiko and Iatriko Palaio Faliro (Athens Medical Group). His extensive studies in Greece and abroad, combined with his personal dedication to the patient's problem, ensure excellent provision of medical care and management of health issues. The physician's long-term involvement and experience in gastroenterology, digestive oncology, idiopathic inflammatory bowel diseases (Crohn's disease, ulcerative colitis), continuous scientific updating, and his distinguished team of collaborators enable proper management of a wide range of gastroenterological conditions. He performs advanced endoscopic, diagnostic, interventional, and therapeutic techniques such as Radiofrequency Ablation (RFA) application in Barrett's esophagus, a method that essentially revolutionizes its treatment, endoscopic mucosal resection (EMR), magnifying endoscopy, high-definition chromoendoscopy for the prevention and early diagnosis of early cancer and precancerous conditions in the digestive system, and Narrow Band Imaging (NBI). More specifically, he performs endoscopic application of Radiofrequency Ablation (RFA) in Barrett's esophagus, cauterization - endoscopic hemostasis of upper and lower gastrointestinal lesions with Argon Plasma Coagulation (APC), small bowel examination with wireless PILL CAM capsule, gastroscopy - CLO Test for Helicobacter pylori detection, liver and biliary diseases, anemia investigation, celiac disease screening, treatment of malabsorption syndrome, diagnosis and treatment of idiopathic inflammatory bowel diseases.

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.

Kosmidis Xaralampos is a Gastroenterologist and maintains a private practice in Cholargos. He holds a medical degree from the Medical School of Semmelweis University in Budapest and specializes in inflammatory bowel diseases and endoscopic gastroenterology. He completed his specialty training in Gastroenterology at the University Gastroenterology Clinic of "Laiko" Hospital. He has served as an assistant consultant (B' level) at the Gastroenterology Clinic of the General Hospital of Athens "Georgios Gennimatas." He performs endoscopies at the Metropolitan General Hospital in Cholargos. He has significant professional experience and in his private practice, he treats the full spectrum of digestive system disorders, such as irritable bowel syndrome, dyspepsia, inflammatory bowel diseases, and others. Finally, the doctor is a member of the Hellenic Gastroenterological Society, the Professional Association of Gastroenterologists of Greece, the Hellenic Foundation of Gastroenterology and Nutrition, the Hellenic Group for the Study of Inflammatory Bowel Diseases (EOMIFNE), and the Hellenic Liver Study Society.