Gastroenterologists for Gastroscopy

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.

Stoupar Mprana is a Gastroenterologist who maintains a private practice in Cholargos. She is also a Scientific Collaborator of the Gastroenterology Department at Metropolitan General in Cholargos and at the "Olympion" Clinic, General Clinic of Patras. She graduated with honors from the Medical School of the University of Novi Sad, Serbia, and completed her practical training in the Nephrology Department of the University Hospital of Ljubljana, Slovenia, and the Surgical Department of the University Hospital of Bari, Italy. She obtained her specialty in the Gastroenterology Department of the General University Hospital of Patras. During her career, she served as a physician for EKAV (National Emergency Center) and for five years in the emergency department of the National Emergency Help Center of Serbia, including during the bombing period. Due to this prior experience, she has acquired significant expertise in the proper and rapid management of cases across the full spectrum of Internal Medicine, which makes her particularly appreciated by her patients. Finally, she is a member of the Medical Association of Patras and the Medical Association of Athens and regularly attends conferences and seminars aimed at continuous education and training in her field.

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.

Polykseni Kalisperati is a Gastroenterologist with extensive clinical experience and a strong academic/research background, aiming to provide comprehensive and personalized care to each patient at her private practice. She is a graduate of the Medical School of the National and Kapodistrian University of Athens and holds a PhD from the Medical School of Athens.

She currently serves as an Assistant Gastroenterology Consultant B’ at the General Hospital of Athens "ELPIS," having also trained and worked for several years at the General Hospital of Athens "Laiko" (University Gastroenterology Clinic & Clinic of Pathological Physiology), gaining extensive experience across the full spectrum of modern Gastroenterology. She places special emphasis on interventional endoscopy, digestive oncology, neuroendocrine tumors, gastrointestinal infections (with a specialization in H. pylori), and gastrointestinal immunology/gastrointestinal manifestations of autoimmune diseases.

Additionally, she actively participates in scientific publications in international journals and is a regular speaker at conferences. She also maintains an educational role in Pathological Physiology at the Medical School of Athens, contributing to the teaching of undergraduate students.

At her practice, Dr. Kalisperati addresses each case with respect, empathy, and scientific evidence, dedicating time for meaningful discussion, proper information, and clear guidance. Her goal is accurate diagnosis, targeted treatment, and long-term follow-up with an emphasis on prevention and improvement of quality of life.

Margetis Nikolaos is a Gastroenterologist and maintains a private practice in Ambelokipoi. He holds a PhD from the Medical School of the National and Kapodistrian University of Athens and is certified in ATLS (Advanced Trauma Life Support) by the American College of Surgeons. Additionally, he is specialized in hepatology and endoscopic gastroenterology. At his private practice, each patient can receive information regarding oncology issues related to the organs of the digestive tract, liver, and pancreas. He offers a range of gastroenterological services to patients including gastroscopy, colonoscopy, rectoscopy, polyp removal, and breath testing for Helicobacter pylori. Furthermore, he has extensive experience in interventional endoscopy, performing endoscopic procedures of the upper and lower gastrointestinal tract. He ensures continuous education by actively participating in approximately 40 international medical conferences, lectures, oral presentations, and chairing sessions at 6 international medical conferences. He has been actively involved in around 250 Greek medical conferences, oral presentations, speeches, and chairing sessions at 50 Greek medical conferences, as well as hands-on training at 20 conferences with practical participation. Moreover, he has contributed a substantial body of written work to international and Greek medical journals, as well as to proceedings of international and Greek medical conferences, and possesses teaching experience at university medical schools. Finally, he is the recipient of numerous Distinctions and Awards.

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).

Το Πολυϊατρείο Affidea Καλλιθέας εξυπηρετεί ασθενείς από το νότιο κέντρο της Αθήνας, με έμφαση στην αξιόπιστη και γρήγορη πρόσβαση σε βασικές ιατρικές ειδικότητες. Ιδανικό για τακτική παρακολούθηση, προληπτικούς ελέγχους και γυναικολογική φροντίδα.

Kasapidis Panagiotis MD, PhD, AGAF, FEBGH is a Gastroenterologist - Hepatologist, Director of the Gastroenterology Clinic and the Endoscopy Department at the "White Cross" Clinic. He graduated from the Medical School of the National and Kapodistrian University of Athens and holds a doctoral degree. He is also a Fellow of the European Board of Gastroenterology and Hepatology (FEBGH) and a Fellow of the American Gastroenterological Association (AGAF). He initially specialized in Internal Medicine at the Naval Hospital of Athens and subsequently in Gastroenterology at the Gastroenterology Department of the General State Hospital of Athens. He received further training as a Clinical Researcher, supported by a fellowship from the Hellenic Gastroenterological Society, at the Gastroenterology Department of Saint Bartholomew's Hospital, University of London, United Kingdom. He then served for five years as Consultant and Clinical Researcher at the Gastroenterology Department of the General State Hospital of Athens. For 20 years, he served as Director of the Gastroenterology Clinic and the Endoscopy Department of the Central Clinic of Athens. Since 1991, he has actively participated in seminars, symposia, round tables, live endoscopic demonstrations, postgraduate seminars, and has been invited as a speaker and chairperson at national and international conferences. Lastly, he is the author of numerous foreign (English-language) publications in prestigious international gastroenterology journals. He is also a trainer of his colleagues in interventional endoscopic gastroenterological procedures. He served as president of the Professional Association of Gastroenterologists of Greece (EPEGE) for nine years.

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.

Dr. Koukias Nikolaos is a Gastroenterologist with a private practice in Patras. He graduated from the Medical School of the University of Patras and received further training at renowned digestive endoscopy centers at the Royal Free Hospital in London and Jichi Medical University Hospital in Japan. He specialized in the Gastroenterology Clinic of the University Hospital of Patras. He worked for four years in London, initially as a Clinical and Scientific Associate and later as a Consultant in the University Gastroenterology and Hepatology Clinic at the Royal Free Hospital. Within the framework of his research work, he has participated in 26 publications in international scientific journals, while to date, 301 scientific publications (journals and books) have cited the results of his work. He is a member of the European Society of Gastrointestinal Endoscopy.

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.

Dr. Pappas Vasileios is a Gastroenterologist - Hepatologist specialized at the General Hospital of Attica Sismanoglio. His clinic is equipped with state-of-the-art endoscopes and a video processor (Full HD) with digital chromoendoscopy capability (for the detection of early lesions of the upper and lower digestive system), as well as modern disinfection and sterilization equipment. The physician provides comprehensive endoscopic examination of the upper and lower gastrointestinal tract (gastroscopy, colonoscopy, rectoscopy), performs polyp removal, endoscopic gastrostomy, esophageal variceal ligation, endoscopic dilations, and investigates gastrointestinal symptoms (dysphagia, odynophagia, dyspeptic discomfort, nausea - vomiting, bloating, abdominal pain, acute and chronic diarrheal syndrome, constipation, fecal incontinence). The clinic also conducts the Hydrogen Breath Test for the diagnosis of intolerance to foods containing lactose, fructose, as well as for the diagnosis of small intestinal bacterial overgrowth. As part of continuous medical education, the physician has participated in numerous national and pan-European conferences.

Arousis Igiant is a Gastroenterologist - Endoscopist and maintains a private practice in Chalandri. He is a graduate of the Medical School of the National and Kapodistrian University of Athens. He completed his specialty in Gastroenterology at the General Hospital of Athens "Evangelismos," performing over 2000 endoscopic procedures of the upper and lower gastrointestinal tract during his training. He has served as the lead physician at the clinics "Athinaion" and "Agios Eleftherios," as well as the lead physician in the Hemodialysis Unit at the "Eugenidio Foundation." Additionally, he has served as a regular supervising physician at the 417 Military Nursing Institution of the Army Share Fund. Finally, he has worked as a gastroenterologist at the Eugenidio Therapeutic Center.

Lourida Theoni is a Gastroenterologist who maintains a private practice in Patras. She graduated from the Medical School of the University of Patras and specialized at the Gastroenterology Clinic of the University Hospital of Patras. She has expertise in the diagnosis and management of numerous gastroenterological and hepatological diseases, as well as in performing a substantial number of diagnostic and interventional endoscopies of the upper and lower gastrointestinal tract (gastroscopies, colonoscopies—polypectomies, management of gastrointestinal bleeding—esophageal variceal ligation—gastrostomy placement—stent placement in the esophagus and colon), endoscopic retrograde cholangiopancreatography (ERCP), and small bowel capsule endoscopy. She has participated in numerous Greek and international conferences, seminars, and advanced training courses in Gastroenterology, Hepatology, and Inflammatory Bowel Diseases, thus maintaining continuous education and staying updated on scientific advancements. Additionally, she has publications in reputable international journals. She is a member of the Medical Association of Patras, the Hellenic Society of Gastroenterology, and the Hellenic Association for the Study of the Liver.

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.