Gastroenterologists for Gastroenteritis

Tzannetakou Ksanthippi is a Gastroenterologist who maintains a private practice in Kolonaki. She studied at the Medical School of the National and Kapodistrian University of Athens and specialized in Gastroenterology at the General Hospital of Athens “Evangelismos.” Additionally, she is an Attending Physician at the B' Gastroenterology Clinic of Iaso Hospital. Finally, she specializes in Endoscopic Gastroenterology (diagnostic and interventional endoscopy of the upper and lower gastrointestinal tract), anorectal diseases (cauterization of warts, diagnosis and treatment of sexually transmitted diseases), idiopathic inflammatory bowel diseases, and endoscopic treatment of obesity (gastric balloon, gastric Botox).

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.

Anastasiadis Dimosthenis is a Gastroenterologist - Hepatologist and has maintained private clinics in Kallithea and the Zografou area since 2001. The doctor offers a wide range of services across the entire spectrum of Gastroenterology - Hepatology, including digestive endoscopies, gastroscopies, colonoscopies, and rectoscopies, among others. Finally, he is a member of the Athens Medical Association.

Giannousis Ioannis MD, PhD is a Specialist Gastroenterologist - Hepatologist - Interventional Endoscopist based in Gerakas, maintaining a private practice there. He holds a Doctorate from the Medical School of the National and Kapodistrian University of Athens and has received advanced training in Interventional Endoscopy and Endoscopic Ultrasound (EUS) at the Vita-Salute San Raffaele University Hospital in Milan, Italy. He is affiliated with Euroclinic Athens and is part of the Medisystem network of physicians. His private practice operates a modern Endoscopic Unit equipped with advanced sterilization systems, state-of-the-art endoscopes, and an electrosurgical unit for performing interventional endoscopic procedures (polypectomies). All endoscopic procedures (gastroscopies - colonoscopies) are performed painlessly, with mild sedation (conscious sedation) or under anesthesiologist supervision when necessary. The physician undertakes the investigation of iron deficiency anemia, diagnosis, monitoring, and treatment of diseases of the digestive system (esophagus, stomach, pancreas, biliary tract, small and large intestines), as well as patients with hepatological conditions. Additionally, he holds a license from the Ministry of Health to perform gastroenterology specialty ultrasounds and provides home visits for urgent cases.

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.

Gkaragkanis Dimosthenis is a Gastroenterologist who operates a private practice in Haidari. He holds a medical degree from the Carol Davila University of Medicine and Pharmacy in Romania and specialized in Internal Medicine at the Pathology Clinic of the Regional Hospital of Tripoli, as well as in Gastroenterology at the Gastroenterology Clinic of the General Hospital of Athens "G. Gennimatas." He is an associate physician at the Advanced Interventional Endoscopy Department of the Athens Bioclinic and a Consultant in the Advanced Therapeutic Endoscopy Department of Metropolitan General. He completed rural service at the Neraiodhorio Regional Clinic of the Pylis Health Center and the Stemnitsa Regional Clinic of the Dimitsana Health Center in Arcadia. Finally, the doctor regularly attends numerous conferences and seminars as part of his ongoing professional development.

Rizos Euripidis is a Gastroenterologist who maintains a private practice in Agios Dimitrios, Attica. Concurrently, he serves as a consultant in the Gastroenterology Department of "Lefkos Stavros" hospital. He is a graduate and a doctoral candidate at the Medical School of the National and Kapodistrian University of Athens. He obtained his specialty title at the Hepatogastroenterology Unit of the University Hospital "Attikon," where he was trained in the full spectrum of Gastroenterology, Hepatology, and particularly Interventional Endoscopy, having performed a substantial number of diagnostic and interventional endoscopies. He specialized at the Neurogastroenterology Department of Queen Mary Royal London Hospital in the United Kingdom, focusing on gastroesophageal reflux disease, irritable bowel syndrome, and other functional digestive disorders. He actively participates in Greek and international conferences with lectures and presentations, as well as publications in international scientific journals. Finally, he is a member of the Medical Association of Athens and Piraeus and the Hellenic Society of Gastroenterology.

Papadopoulou Iliana MD, MSc, PhD, FEBGH is a Gastroenterologist maintaining a private practice in Patras. She graduated from the Medical School of the National and Kapodistrian University of Athens with postgraduate studies in Health Unit Management (Hellenic Open University) and holds a doctoral degree from the Medical School of the University of Patras. She has obtained the European Specialty Diploma in Gastroenterology and Hepatology (ESEGH) and has additionally trained in ultrasound and interventional endoscopy through international hands-on courses. She possesses extensive clinical experience in both the public and private sectors, having served as head of the endoscopy unit in a diagnostic center, while maintaining a private practice. She has worked in tertiary care hospitals, completing her specialty training at the Gastroenterology Clinic of the National Cancer Institute "Metaxa". Her scientific activity includes publications in international journals, participation in national and international conferences as a speaker and author of studies, while continuously pursuing further education in the fields of Gastroenterology and Hepatology.

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.

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.

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.

Koutsounas Ioannis is a Gastroenterologist with a private practice in Athens (Nea Filothei area). He is an honored PhD graduate of the Medical School of Athens and an alumnus of the Medical School of Ioannina. He has undergone advanced training in Digestive Endoscopy techniques at the internationally renowned John Radcliffe University Hospital in Oxford, United Kingdom, as a scholar of the Hellenic Gastroenterological Society. He obtained his specialization in Gastroenterology at the "Laiko" and "Sismanogleio" Hospitals in Athens, and his experience has also been enriched at major hospitals and centers abroad, such as John Radcliffe (Oxford), Queen Alexandra (Portsmouth), and the Bank of Cyprus Oncology Center (Nicosia). Currently, he holds the position of University Fellow (full-time salaried collaborator, equivalent to an attending physician) in the 3rd Medical Clinic of the Medical School of the University of Athens at "Sotiria" Hospital, within the Gastroenterology Department, where he works during morning hours. Additionally, he is one of the few gastroenterologists in Greece who holds the European Diploma in Gastroenterology and Hepatology (European Section and Board of Gastroenterology and Hepatology) after examinations. He is a member of various Greek and international scientific societies and associations, has participated in numerous gastroenterology-related conferences and seminars, and has a notable publication record in international journals. He possesses significant experience and skill in Diagnostic and Therapeutic Digestive Endoscopy (Polypectomies - EMR, Dilations, Endoscopic Hemostasis), resulting from the high-standard training he has received abroad.

Floudaras Ioannis is a specialist Gastroenterologist – Hepatologist - Interventional Endoscopist with many years of experience in the field of Gastroenterology and Hepatology, maintaining a private practice in Evosmos. He serves as a Consultant at Euromedica Kyaneos Stavros, Bioclinic, and Agios Loukas Clinic. His mission is to provide high-quality medical care to his patients, combining scientific knowledge with a patient-centered approach. The clinic offers a wide range of specialized Gastroenterology and Hepatology services. The objective is to deliver high-quality medical care with an emphasis on the prevention, diagnosis, and treatment of Gastrointestinal and Liver diseases. Utilizing the most advanced methods and technologies, the best possible care for patients is ensured. He is committed to continuous education and staying informed about new developments in the field, thereby offering the most up-to-date and effective therapeutic options.

Iatrokosmos is a comprehensive primary healthcare unit located in the Ampelokipoi area. It consists of the Iatrokosmos Gastroenterology Department, which is staffed by highly trained scientific personnel and equipped with state-of-the-art medical technology. The center's purpose is to provide the solution that each patient desires, namely diagnosis and treatment, in a cost-effective, reliable manner with only the necessary examinations. The goal is to meet the health needs of every family, insured or uninsured, of any age, with comprehensive solutions. Their philosophy includes three fundamental principles: friendly service – high-quality examinations – affordable prices. Finally, always prioritizing patient safety, they take responsibility for the patient’s health from start to finish, meaning from diagnosis through to treatment.

Anyfantis Nikolaos is a Gastroenterologist who maintains private practices in Kifisia and Cholargos. He is also the Director of the 2nd Gastroenterology Clinic at IASO Hospital and has served as Consultant at the Gastroenterology Clinic of the private hospital "Mitera". He graduated from the Medical School of the National and Kapodistrian University of Athens with honors, ranking second in his class of 2002. Throughout his professional career at "Sismanogleio", "Attikon", and "Laiko" Hospitals, he gained experience in endoscopies of the digestive system and in managing patients with gastroenterological and hepatological diseases, specifically in inflammatory bowel diseases (ulcerative colitis, Crohn’s disease), treatment of condylomas, and colorectal cancer prevention. He specializes in the endoscopic treatment of obesity, which he performs at IASO Hospital using modern methods, namely a) gastric botulinum toxin injections and b) endoscopic placement of a gastric balloon. He worked for two years in a private biotechnology company in the clinical studies sector for the development of new oncological therapies. To date, he has participated in numerous national and pan-European conferences, aiming for excellent training and continuous updates in his field of expertise. Finally, he is a member of the Athens Medical Association and the Hellenic Gastroenterological Society.

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.

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.

H Ανδριανάκου Γεωργία MD, MSc είναι Γαστρεντερολόγος – Ηπατολόγος – Επεμβατική Ενδοσκόπος και διατηρεί το ιδιωτικό της ιατρείο στη Νέα Κηφισιά. Παράλληλα είναι συνεργάτης του Γαστρεντερολογικού Τμήματος του Νοσοκομείου Ερρίκος Ντυνάν , όπου διενεργεί όλες τις απαραίτητες ενδοσκοπικές πράξεις : Γαστροσκόπηση με λήψη βιοψιών ,κολονοσκόπηση , πολυποδεκτομή , ορθοσιγμοειδοσκόπηση , τοποθέτηση γαστροστομίας και άλλα. Όλες οι ενδοσκοπικές πράξεις πραγματοποιούνται παρουσία Αναισθησιολόγου και εξειδικευμένου νοσηλευτικού προσωπικού , για την ασφάλεια του ασθενούς. Η κ. Ανδριανάκου είναι απόφοιτος της Ιατρικής Σχολής του Πανεπιστημίου Πατρών. Από το 2013 έως το 2017 εργάστηκε στο Πανεπιστημιακό Νοσοκομείο της Ντιζόν στη Γαλλία CHU Dijon Bourgogne και έλαβε τον τίτλο της Γενικής Ιατρικής. Το 2015 ολοκλήρωσε επιτυχώς το Μεταπτυχιακό δίπλωμα « Ιδιοπαθείς Φλεγμονώδεις Νόσοι του Εντέρου» του Πανεπιστημίου της Lille και του Πανεπιστημίου Sorbonne - Université Pierre- et-Marie- Curie του Παρισίου. Το 2018 επέστρεψε στην Ελλάδα και ξεκίνησε την ειδίκευσή της στη Γαστρεντερολογία – Ηπατολογία στο Γενικό Νοσοκομείο Αθηνών "Γ. ΓΕΝΝΗΜΑΤΑΣ". Το 2020 ολοκλήρωσε επιτυχώς μετά από γραπτές εξετάσεις την παρακολούθηση του 13 ου Σχολείου Κλινικής Ηπατολογίας, το οποίο διοργανώνεται από την Ελληνική Εταιρία Μελέτης Ήπατος. Επιπρόσθετα, το 2021 παρακολούθησε επιτυχώς το Ενδοσκοπικό Σχολείο, υπό την αιγίδα της Ελληνικής Γαστρεντερολογικής Εταιρείας. Το 2022 έλαβε τον τίτλο της Ιατρικής Ειδικότητας της Γαστρεντερολογίας – Ηπατολογίας. Από το 2022 έως το 2025 συνέχισε να εργάζεται στη Γαστρεντερολογική κλινική του Γενικού Νοσοκομείου Αθηνών "Γ.ΓΕΝΝΗΜΑΤΑΣ". Η ιατρός μέσα από της πολυετή θητεία της στο μεγαλύτερο νοσοκομείο της Αττικής απέκτησε μεγάλη εμπειρία στη διαχείριση ευρέως φάσματος σύνθετων γαστρεντερολογικών και ηπατολογικών περιστατικών. Παράλληλα, επιτέλεσε πολυάριθμες ενδοσκοπικές πράξεις. Έχει συμμετάσχει σε πληθώρα ελληνικών και διεθνών συνεδρίων, παρουσιάζοντας εργασίες και αποτελέσματα ερευνητικών μελετών, παραμένοντας έτσι σε συνεχή ενημέρωση για τις εξελίξεις στον τομέα της. Αποτελεί ενεργό μέλος της Ελληνικής Γαστρεντερολογικής Εταιρείας, της Ελληνικής Εταιρίας Μελέτης Ήπατος και της Ελληνικής Ομάδας Μελέτης των Ιδιοπαθών Φλεγμονωδών Νοσημάτων του Εντέρου. Στο ιατρείο της διαχειρίζεται περιστατικά όπως : γαστροοισοφαγική παλινδρόμηση , διερεύνηση αναιμίας, κοιλιακό άλγος, σύνδρομο ευερέθιστου εντέρου, έλεγχος για ελικοβακτηρίδιο του πυλωρού, λιπώδης διήθηση ήπατος, αυτοάνοσα νοσήματα του ήπατος και του παγκρέατος, ηωσινιφιλική οισαφαγίτιδα , νόσος Crohn και Ελκώδης κολίτιδα, γαστρίτιδα, ηπατίτιδα, κίρρωση του ήπατος, αιμορροΐδες και άλλα. Ταυτόχρονα, προγραμματίζει άμεσα μαζί με τον ασθενή όποια ενδοσκοπική πράξη απαιτείται, μετά από ενδελεχή ενημέρωση.

Kostas Athanasios MD, PhD is a Gastroenterologist with a private practice located in Kato Toumpa, Thessaloniki. He holds a Doctorate from the Medical School of the National and Kapodistrian University of Athens and is a graduate of the same Medical School. He initially specialized at the General Hospital of Mytilene "Vostaneio" and completed his Gastroenterology specialty training at the University Gastroenterology Clinic of the General Hospital of Athens "Laiko." Additionally, he has served as a Scientific Collaborator in the Endoscopy Department of the 1st Propaedeutic Clinic of the University General Hospital of Thessaloniki AHEPA. Dr. Athanasios has participated in numerous conferences, symposia, and workshops throughout Greece, focusing primarily on Gastroenterology, Hepatology, and Digestive Oncology. He also has numerous presentations at Greek and international conferences, as well as publications in foreign-language journals.

Kyriakos Nikolaos MD, PhD is a Gastroenterologist with a private practice in Ampelokipoi. He holds a doctorate from the Medical School of the National and Kapodistrian University of Athens, with a dissertation focused on wireless capsule endoscopy of the small intestine. Additionally, he possesses the European Board of Gastroenterology & Hepatology diploma and is a graduate of the Medical School of Aristotle University of Thessaloniki as well as the Military School of Corps Officers (SSAS). He completed his specialization in general pathology at the 2nd Internal Medicine Clinic of the 401 General Military Hospital of Athens and in gastroenterology at the 1st Gastroenterology Clinic of the General Hospital of Athens "Evangelismos". He is a Consultant at the Gastroenterology Clinic of the 401 General Military Hospital of Athens and an External Collaborator at the "Vioclinic Ampelokipoi" Hospital. In his private practice, he provides services for all digestive system diseases, idiopathic inflammatory bowel diseases (ulcerative colitis, Crohn’s disease), and endoscopic procedures (gastroscopy, colonoscopy, polyp removal). Finally, he has attended numerous conferences in Greece and abroad and is a member of the Hellenic Gastroenterology Society, the Hellenic Foundation for Gastroenterology and Nutrition, and the Hellenic Study Group for Idiopathic Inflammatory Bowel Diseases.