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Prof. Dr. İbrahim Doğan is a gastroenterologist. He earned his MD from Ankara University Faculty of Medicine in 1991. He became an Internal Medicine specialist at Gazi University in 1996. He completed gastroenterology subspecialty training at İnönü University in 2001.

His academic career was at Gazi University. He served as Lecturer (2002), Assistant Professor (2003), Associate Professor (2007), and Professor (2012). He worked as a researcher at the University of California San Diego from 2004 to 2006. He has practiced at Koru Hospital since January 2023.

Clinical focus includes gastroesophageal reflux, irritable bowel syndrome, constipation, gastroparesis, achalasia, bloating, gas and belching, fecal incontinence, ulcerative colitis, and Crohn’s disease. He performs ERCP, stent placement, balloon and bougie dilation, polypectomy, argon plasma coagulation, double-balloon enteroscopy, and bleeding control.

Assoc. Prof. Orhan Ünal Zorba, MD, is a urologist focused on andrology and endourology. He has about 25 years of experience. He currently sees patients at Private TUSA Hospital. He started there on 8 June 2026.

His academic work includes 29 international and 13 national publications and 7 book chapters. He has given at least 9 presentations at international congresses. His studies have been presented at EAU, ESSM, ICS, and EULIS meetings. He served as Assistant and Associate Professor of Urology from 2009 to 2016. He is a member of the Istanbul Medical Chamber, the Turkish Association of Urology, the Turkish Society of Andrology, and the Eastern Black Sea Association of Urologists.

Key areas include male infertility (micro‑TESE; outcomes in 191 patients with non‑obstructive azoospermia), microsurgical varicocele repair, prostate surgery (HoLEP, TURP), endoscopic stone surgery (URS, PCNL), and uro‑oncology. He speaks English.

Dr. Hasan Yucel has performed 10,000+ heart valve replacement surgeries with minimal complications. He is a cardiologist at Medicana Sivas Hospital specializing in heart failure and rhythm disorders. Dr. Yucel serves as a frequent guest speaker at international scientific meetings and CDEs.

• Specializes in treating complex heart valve diseases and cholesterol disorders.
• Performs radiofrequency ablation and carotid angioplasty with stenting.
• Maintains a high volume of national and international scientific publications.
• Works at Medicana Sivas Hospital, which treats over 110,000 patients annually.

Dr. Okay Abaci is a professor of cardiology at Biruni University Hospital in Istanbul. He specializes in heart and leg angiography and peripheral arterial disease. Dr. Abaci holds over 100 domestic and international scientific publications. He completed dedicated training in peripheral arterial intervention in Italy.

• Performs coronary angiography, heart cryoablation, and carotid stenting.
• Member of the European Society of Cardiology and the SCAI Association.
• Treats complex conditions including atrial fibrillation and dilated cardiomyopathy.
• Works at Biruni University Hospital, a TEMOS-accredited facility in Turkey.

Dr. Goksun Ayvaz is a professor trained in internal medicine and in endocrinology and metabolism. He earned his MD from Ankara University Faculty of Medicine in 1983. He completed compulsory service in Nevsehir from 1983 to 1985. He worked at the Department of Internal Medicine at Gazi University in 1985 and in 1994. He completed a residency in the United States in 1990 and subspecialty training in endocrinology and metabolism in the United States in 1996.

He served as an internal medicine specialist in the Internal Medicine and Cardiology units at Ankara Numune Hospital and Ankara Bayindir Medical Center. His academic titles are Assistant Professor (1996–1997), Associate Professor (1997), and Professor (2003). In 1997, he conducted research at the Experimental Medicine Laboratory of the Université libre de Bruxelles with Prof. W. J. Malaisse on pancreatic islet isolation and static incubation.

Medical interests include Graves disease (toxic goiter), Graves orbitopathy, thyroid disease (nodules and thyroid cancer), diabetes mellitus (insulin resistance and latent diabetes), obesity, and gonadal and pituitary diseases.

Prof. Dr. Musa Aydınlı is an internal medicine specialist and gastroenterologist. He completed his MD at Hacettepe University in 1997. He finished internal medicine training in 2003 and gastroenterology training in 2007 at the same institution. He worked at Kayseri Training and Research Hospital from 2007 to 2009. He served in the Gastroenterology Department at Gaziantep University from 2009 to 2014. He became an associate professor in 2012 and a professor in 2020. He joined Gülhane Training and Research Hospital in 2022. He now practices at Private Koru Ankara Hospital.

Clinical focus: GERD; dyspepsia, gastritis, and Helicobacter pylori; peptic ulcer disease; celiac disease; IBS and IBD (ulcerative colitis, Crohn’s disease); colon polyps; colorectal and upper GI cancers; liver disease (fatty liver, chronic hepatitis, cirrhosis, portal hypertension); hepatobiliary and pancreatic disorders and cancers. Procedures: EGD, rectosigmoidoscopy, and colonoscopy; biopsy, polypectomy, and endoscopic mucosal resection; hemostasis and APC; dilation and stent placement; PEG; ERCP; EUS-guided biopsy.

Prof. Dr. Mustafa Özkan is a cardiologist at Koru Ankara Hospital. His main areas are coronary artery and heart valve diseases, hypertension, and hyperlipidemia.

He graduated from Istanbul University Faculty of Medicine in 1974. He completed specialization in occupational diseases in 1982 and in cardiology in 1991. He became an associate professor in 1993 and a professor in 2007.

He served at GATA, Izmir Air Hospital, Kütahya Air Hospital, and the NATO Hospital in Belgium. He has published many national and international articles. He has treated many patients.

The doctor is a highly trained urology specialist who completed extensive medical education and clinical training, including a degree from Azerbaijan Medical University and a comprehensive specialization in urology at the Hacettepe University Faculty of Medicine. With a solid foundation in clinical practice gained during an internship at the Baku Republican Clinical Hospital, the doctor possesses deep expertise in the field.

The doctor's clinical focus encompasses a wide range of advanced urological disciplines, including endourology, urooncology, and andrology. Furthermore, the doctor is proficient in performing complex surgical interventions, with a specific emphasis on laparoscopic and robotic surgery, as well as pediatric urology.

The doctor is a highly specialized pulmonologist with extensive expertise in the diagnosis and management of complex respiratory conditions. Clinical focus areas include chronic obstructive pulmonary disease (COPD), asthma, interstitial lung diseases, sarcoidosis, pulmonary hypertension, and lung cancer. The doctor is proficient in advanced diagnostic and therapeutic procedures, including bronchoscopy, thoracentesis, and pleural fluid drainage.

Furthermore, the doctor provides comprehensive care for patients requiring intensive care monitoring, noninvasive and invasive mechanical ventilation, and pulmonary rehabilitation. Additional clinical competencies include the management of sleep apnea syndrome, pulmonary embolism, and specialized tobacco addiction treatment programs.

The doctor is a cardiology specialist who completed medical training at Istanbul University and specialized at the Siyami Ersek Thoracic Heart and Vascular Surgery Training and Research Hospital. With an extensive academic and clinical background, the doctor has served as a chief resident and associate professor, eventually attaining the rank of professor. The doctor currently practices at Ankara City (Bilkent) Hospital.

The doctor possesses significant expertise in interventional cardiology, cardiac pacemaker implantation, and electrophysiology. Clinical focus areas include echocardiography, heart valve procedures such as TAVI and mitral balloon valvuloplasty, and complex coronary and CTO procedures. The doctor has authored numerous scientific studies in national and international journals.

The doctor is a highly qualified specialist in Endocrinology and Metabolic Diseases, holding a medical degree from Hacettepe University. With extensive clinical training, the doctor completed a specialization in Internal Medicine at Ankara University followed by subspecialty training in Endocrinology and Metabolic Diseases at Ufuk University.

The doctor has achieved significant academic and professional milestones, including an Associate Professorship in 2013 and reaching the rank of Professor in Endocrinology and Metabolic Diseases at Istinye University in 2019. Throughout a distinguished career, the doctor has demonstrated a deep commitment to the field, contributing to both clinical practice and medical education.

Dr. Mustafa Yaman is a pulmonologist at Biruni University Hospital in Istanbul. He is a former professor at Istanbul University with decades of expertise in lung health. Dr. Yaman served as a visiting professor at the University of Paris Rothschild Hospital. He specializes in the diagnosis and treatment of lung nodules and cancer.

• Manages complex respiratory cases including asthma, COPD, and interstitial lung diseases.
• Performs bronchoscopic procedures for precise lung diagnostics.
• Served as Medical Director at Kolan Hospital and Universal Hospitals Group.
• Works at Biruni University Hospital, a TEMOS-accredited facility in Turkey.

Dr. Sefanur Dalarslan Karakaya is a functional medicine physician at Biruni University Hospital in Istanbul. She focuses on medical nutrition, autoimmune diseases, and lifestyle medicine. Dr. Karakaya holds 5-module functional medicine training and certification in medical nutrition counseling. She works at a TEMOS-accredited university hospital that serves patients from Europe and the USA.

• Specializes in treating obesity, insulin resistance, and liver diseases.
• Certified in homeopathy and phytotherapy for holistic patient care.
• Treats complex conditions like intestinal permeability and histamine sensitivity.
• Manages autoimmune disorders through epigenetics and elimination diets.

The doctor is an accomplished academic and surgeon specializing in endourology, uro-oncology, robotic surgery, and andrology. With a medical degree from Gazi University and specialized training from Ankara Training and Research Hospital, the doctor attained the rank of professor in 2022. The clinical practice focuses on minimally invasive techniques, including robot-assisted laparoscopic surgery, HoLEP, RIRS, and PNL for conditions such as kidney stones, prostate and bladder cancers, and male reproductive health.

An active educator and researcher, the doctor serves as an instructor for advanced surgical techniques and holds certifications in da Vinci robotic technology. The doctor is a member of several prestigious organizations, including the European Association of Urology.

The doctor is a distinguished cardiology specialist with extensive clinical experience, having earned a medical degree from Hacettepe University in 2004 and completed cardiology specialization at Gazi University in 2010. Achieving the rank of Professor in 2024, the doctor has served at several prominent institutions, including Ankara Turkey Higher Specialized Hospital and Ankara Bilkent City Hospital.

The doctor specializes in preventive cardiology, hyperlipidemia, hypertension, and heart failure, with significant expertise in interventional procedures such as coronary angiography, stent and balloon treatments, and complex coronary interventions. The doctor is also skilled in cardio-oncology, rhythm disorders, and advanced imaging techniques like TEE.

Dr. Kamil Ozdil is a professor of gastroenterology at Biruni University Hospital in Istanbul. He won the National Scholar Award for his research on Helicobacter Pylori therapies. Dr. Ozdil treats complex liver cirrhosis and inflammatory bowel diseases. He works at a TEMOS-accredited university facility with over 130 specialist doctors.

• Performs specialized procedures like EUS, ERCP, and endoscopic mucosal resection.
• Expert in stomach balloon placement for weight management and gastric health.
• Winner of multiple national prizes for research in hepatitis and ulcerative colitis.
• Member of the Turkish Gastroenterology and Hepatitis Infections Union associations.