The doctor is an Interventional Neuroradiologist with extensive involvement in professional radiology societies. The doctor holds memberships in several prestigious organizations, including the World Federation of Interventional and Therapeutic Neuroradiology, the Cardiovascular and Interventional Radiological Society of Europe, and the European Association of Radiology. Additionally, the doctor is affiliated with various national societies such as the Turkish Society of Radiology and the Turkish Society of Neuroradiology, highlighting a strong commitment to the field of neuroradiology.

Prof. Dr. Mert Yilmaz is a board-certified cardiovascular surgeon with more than 30 years of experience. He specializes in both adult and pediatric cardiac surgery. He graduated from Istanbul University in 1988. He completed his residency at Uludag University and received further training at the Royal South Hants Hospital in the UK.

Dr. Yilmaz was among the first in Turkey to perform endovascular repair of abdominal aneurysms. He completed the country’s second case. He has led cardiovascular surgery departments at leading hospitals. He now heads the department at Kadıköy Florence Nightingale Hospital. He is also a full professor at Halic University and an international member of the Society of Thoracic Surgeons (USA).

Dr. Yilmaz has published over 50 peer-reviewed articles, including 7 first-in-literature reports. He holds accreditations from the European Association of Cardiothoracic Surgery.

Pediatric Hematology and Oncology

YOSAPHON VICHIENVANITCHKUL, M.D.

General Internal Medicine

Graduated (M.D. From)

Doctor of Medicine, Faculty of Medicine, Srinakharinwirot University

Working in general internal medicine treat patients with a wide range of acute and long-term medical conditions.

Certificates

Certificate of Internal Medicine, Faculty of Medicine, Bhumibol Adulyadej Hospital, Directorate of Medical Services, Royal Thai Air Force

Current Positions

General Internal Medicine doctor at Intrarat Hospital

Nichakorn Seehirunwong, M.D.

Radiologist

Graduated (M.D. From)

Doctor of Medicine, Faculty of Medicine, Prince of Songkla University

• Interpreting the results of medical imaging tests.
• Comparing medical image findings with other examinations and tests.
• Consulting with your referring healthcare provider (the provider who ordered the imaging tests) to help choose the proper imaging test and using test results to inform your medical care. Writing reports of results and diagnoses.
• Recommending additional examinations or treatments when necessary.
• Treating diseases by using radiation (radiation oncology) or imaging-guided procedures (interventional radiology). Performing or directing radiology staff to carry out imaging tests.

Certificates

Certificate of Diagnostic Radiology, Faculty of Medicine, Prince of Songkla University

Current Positions

Diagnostic Radiologist at Intrarat Hospital

Associate Professor Dr. Yusuf AÇIKGÖZ
Specialization: Medical Oncology

Education:

• 2004-2011: İnönü University Faculty of Medicine
• 2011-2016: Ankara Numune Training and Research Hospital, Internal Medicine
• 2017-2022: Health Sciences University, Medical Oncology

Professional Experience:

• 2016-2017: Bingöl City Hospital, Internal Medicine
• 2021-2022: Health Sciences University, Medical Oncology
• 2022-2023: Kastamonu Education and Research Hospital, Medical Oncology
• 2023-2024: Ohio State University, Medical Oncology
• 2024-Present: Lokman Hekim University, Medical Oncology, Ankara Hospital

Clinical Trials, Courses, Certifications:

Clinical Trials:

• 2017-2021: Phase III, CheckMate-649 Study (Assistant Investigator)
• 2022-Present: Phase III, Fortitude-101 Study (Assistant Investigator)

Courses:

• 2018: Medicres Basic and Advanced Biostatistics Training Program (ongoing), Istanbul-Vienna
• 2019: Immuno-Oncology Education Course, March 1-2, 2019, Vienna, Central European Cooperative Oncology Group (CECOG)
• 2018: Good Clinical Practice Certification, April 7-8, 2018, Ankara, Health Sciences University
• 2017: Basic Oncology Training Program, November 25-26, 2017, Adana, Clinical Oncology Society
• 2016: Basic Ultrasonography Course (10 hours theoretical + 10 hours practical), September 24-25, 2016, Ankara, Turkish Emergency Medicine Association

Certifications:

• Ongoing: ECFMG Certification
• 2024: CITI Responsible Conduct of Research (The Ohio State University)
• 2024: CITI IACUC-Laboratory Animal Research (The Ohio State University)
• 2024: CITI Human Subjects Protection (The Ohio State University)
• 2024: CITI Good Clinical Practice (The Ohio State University)
• 2023: Occupational English Test (OET)
• 2019: International English Language Testing System (IELTS), Total Score: 6.5, May 26, 2019, Ankara, British Council
• 2017: USMLE Step 2 CK Exam; Score: 244, February 7, 2017
• 2016: USMLE Step 1 Exam; Score: 215, August 25, 2016

Memberships:

• American Society of Clinical Oncology (ASCO) - 2022
• Turkish Society of Medical Oncology - 2020

Prof. Emin Tireli, MD, is a leading pediatric cardiovascular surgeon. He has performed over 6,329 congenital cardiac surgeries since 1993. He is known worldwide for being one of the first to use the complex Nikaidoh procedure for transposition of the great arteries (TGA).

Dr. Tireli performs more than 100 neonatal cardiac surgeries each year. His expertise includes arterial switch operations, total pulmonary return anomalies, pulmonary banding, and Norwood procedures. He has used hybrid techniques in 15 cases. Dr. Tireli has also completed 30 reconstructions of aortic anomalies and many PDA ligations in extremely low birth weight infants. His work greatly supports neonatal care.

Education and Specialization

• 2006: Kocaeli University Faculty of Medicine
• 2014: Akdeniz University Faculty of Medicine, Internal Medicine
• 2018: Akdeniz University Faculty of Medicine, Medical Oncology

Experience

• 2006 - 2008: Konya Derebucak District Hospital
• 2009 - 2015: Akdeniz University Hospital
• 2015: Antalya Kaş State Hospital
• 2015 - 2016: İnönü University Faculty of Medicine
• 2016 - 2021: Akdeniz University Hospital
• 2021 - 2023: Antalya Training and Research Hospital

Education and Specialization

• 1982 - 1987: Ege University Faculty of Medicine
• 1987 - 1993: İzmir Atatürk Training and Research Hospital – Specialization

Experience

• 1993 - 1996: İzmir Atatürk State Hospital – Specialist Doctor
• 1996 - 1998: İnönü University Faculty of Medicine – Assistant Professor
• 1998 - 2001: İnönü University Faculty of Medicine – Associate Professor
• 2001 - 2005: Başkent University Adana Practice and Research Hospital – Associate Professor
• 2006 - 2007: Başkent University Adana Practice and Research Hospital – Professor
• 2007 - 2013: Başkent University Istanbul Practice and Research Hospital – Professor
• 2013 - 2015: Hisar Intercontinental Hospital, Istanbul – Professor
• 2015 - Present: Acıbadem Bakırköy Hospital, Istanbul – Professor

Dr. Baha Zengel is a general surgeon with expertise in breast, gallbladder, thyroid diseases, and hernia repairs. He graduated from Ege University Faculty of Medicine in 1990. In 2004, he earned a doctorate in Basic Oncology from Dokuz Eylül University. He became an Associate Professor of General Surgery in 2014 through the Inter-University Board.

Dr. Zengel is skilled in advanced surgical procedures. His experience includes skin and breast-conserving mastectomy, oncoplastic breast surgery, laparoscopic cholecystectomy, sentinel lymph node biopsy, and ROLL/SNOLL techniques. He has held important positions at Izmir Bozyaka Training and Research Hospital, including Education Officer.

He is a member of several professional associations. He serves on the Board of Directors of the Aegean Region Surgery Association and is a founding board member of the Basic Oncology Association.

Prof. Dr. Mehmet Sait Buğdacı is a highly experienced physician specializing in Internal Medicine and Gastroenterology. He completed his medical education and specialty training at Istanbul University Cerrahpaşa Faculty of Medicine and Şişli Etfal Training and Research Hospital. His clinical interests include gastrointestinal diseases, endoscopic procedures, and clinical research. He has contributed to medical education through numerous scientific publications and textbooks and currently sees patients at Central Hospital.

Areas of Interest • Pediatric gastrointestinal surgery • Anorectal malformations and motility disorders • Minimally invasive pediatric surgery • Pediatric colorectal and pelvic floor disorders

Assoc. Prof. Atakan Topçu, M.D., is a medical oncologist at Medipol University and Medipol Acıbadem Regional Hospital. He treats solid tumors, including lung, breast, colorectal, gastric, and neuroendocrine cancers. His work also covers targeted therapies, immunotherapy, geriatric oncology, and cancer-related malnutrition, cachexia, and sarcopenia.

He has authored more than 50 peer-reviewed papers. Recent work includes a 2024 Frontiers in Medicine study on geriatric syndromes and a 2023 Future Oncology paper on sarcopenia and anxiety in lung cancer. He has also published on the CONUT score in breast cancer and on malnutrition in HER2-negative metastatic gastric cancer.

Dr. Topçu serves on the Editorial Board of BMC Cancer. He is a member of the Turkish Society of Medical Oncology, ESMO, and the Turkish Geriatrics Society. Education and training: M.D., Uludağ University; residency in Internal Medicine, Marmara University; fellowship in Medical Oncology, Bezmialem Vakıf University.

Dr. Jieun Ban, MD, is a pediatric cardiologist at Bucheon Sejong Hospital. She focuses on arrhythmias and congenital heart disease. She provides electrophysiologic evaluation for children and adolescents. She completed training in pediatrics and pediatric cardiology.

Her practice includes ASD, VSD, cardiac syncope, and other rhythm disorders. She offers advanced diagnostics and interventional care. This includes cryoablation and catheter-based electrophysiology. She works with specialized cardiac teams. She is skilled in echocardiography, peri-procedural care, and long-term follow-up.

Dr. Jeong‑Yoon Kim, MD, is a pediatric cardiologist at Bucheon Sejong Hospital. She has led the Department of Pediatrics and Adolescent Medicine since 2019 and also sees patients at Incheon Sejong Hospital.

She graduated from Yonsei University Wonju College of Medicine. She completed clinical training at Severance Hospital, a tertiary medical center in Korea. Her practice focuses on congenital heart disease (ASD, VSD), Kawasaki disease, pediatric arrhythmias, syncope, and intensive cardiac care. She has strong skills in echocardiography, pre‑ and post‑procedure care, long‑term follow‑up, and team‑based cardiac care.

Dr. Muhammed Mustafa Atci is an Associate Professor of Medical Oncology at İstinye University, Liv Hospital Topkapı (2025–present). He previously served as Associate Professor and Education Coordinator at Prof. Dr. Cemil Taşcıoğlu City Hospital (2023–2025). He was also a Medical Oncologist there (2018–2021).

He has been a member of ASCO and the Turkish Society of Medical Oncology since 2018. He is the author or co-author of 19 peer-reviewed international papers on colon, breast, gastric, pancreatic, lung, thyroid, sarcoma, and colorectal cancers.

Notable works include a multicentre study on stage IIB colon cancer survival (Journal of Chemotherapy). He also studied the De Ritis ratio for lung metastasis in testicular cancer (Current Urology). His prognostic studies used PET/CT, MSI, lymph node ratio, and metabolic tumor volume.

Dr. Cagdas Erdogan is a gastroenterologist at Ankara Etlik City Hospital. He trained in Internal Medicine and Gastroenterology. He earned his MD from Dokuz Eylul University. He completed his Internal Medicine residency from 2014 to 2019. He then completed a Gastroenterology fellowship at Ankara City Hospital from 2019 to 2022. His clinical focus includes advanced endoscopy (ERCP, EUS, EMR, ESD, POEM, EGD, colonoscopy, double-balloon enteroscopy), inflammatory bowel disease, and hepatology.

He has about 40 publications. His work appears in The Turkish Journal of Gastroenterology, Scientific Reports, Endoscopy, and Digestive Diseases and Sciences. Notable studies address vedolizumab in IBD and prophylaxis for post-ERCP pancreatitis. He also reported a 13-year Crohn’s cohort comparing infliximab and adalimumab. Additional work covers outcomes with an adalimumab biosimilar and innovative endoscopic therapies (MCA via double-balloon enteroscopy, holmium laser for Bouveret syndrome, POEM for Zenker’s diverticulum, and ESD for esophageal papillomatosis).

Education

Doctor of Medicine (M.D.) degree from Faculty of Medicine, Ramathibodi Hospital, Mahidol University, 2022

Certifications

Certification of Anti-aging and Regenerative Medicine from The American Board of Antiaging and Regenerative Medicine (ABAARM)

Certification of Nutritional Wellness from The American

Naturopathic Certification Board (ANCB)

Clinical Focus

General disease diagnosis and treatment, as well as wellness care

Languages spoken: Thai and English