Seeing the whole patient, not just the disease.
Academic discipline and a people-first approach to medicine, grounded in internal medicine and gastroenterology.
Asst. Prof. Dr. Koray Koçhan graduated from İstanbul University-Cerrahpaşa Faculty of Medicine (English-language program). He completed his internal medicine residency at the same faculty and his gastroenterology fellowship at the University of Health Sciences Haydarpaşa Numune Training and Research Hospital.
After serving at Ağrı State Hospital, Haydarpaşa Numune, Bezmialem Vakıf University and Liv Hospital Vadi Istanbul, he has been a faculty member at Biruni University Faculty of Medicine and has seen patients at Biruni University Hospital since 2025.
His main interests are inflammatory bowel diseases, celiac disease, clinical nutrition, liver, biliary and pancreatic diseases, and advanced endoscopic procedures. He builds the diagnosis and treatment plan together with each patient.
Philosophy of care
- Evidence-based: Guided by current science, avoiding unnecessary tests and interventions.
- Personalized: No two patients with the same diagnosis are alike; the plan fits the person’s life.
- Clear and transparent: Diagnosis, options and expectations are discussed together in plain language.
- Holistic: Medical treatment is paired with sleep, physical activity, nutrition and stress management.
A career built year by year
A foundation in medicine and internal medicine at Cerrahpaşa grew into gastroenterology expertise at Haydarpaşa Numune. Experience across state, university and private hospitals has since combined clinical practice with an academic perspective.
Medical Degree
İstanbul University-Cerrahpaşa Faculty of Medicine (English-language program)
Internal Medicine Residency
İstanbul University-Cerrahpaşa Faculty of Medicine
Gastroenterology Fellowship
University of Health Sciences Haydarpaşa Numune Training and Research Hospital
Gastroenterologist
Ağrı State Hospital
Gastroenterologist
Haydarpaşa Numune Training and Research Hospital
Instructor and Gastroenterologist
Bezmialem Vakıf University, Internal Medicine, Division of Gastroenterology
Gastroenterologist
Liv Hospital Vadi Istanbul
Assistant Professor
Biruni University Faculty of Medicine; Advanced Endoscopy Center, Biruni University Hospital
Clinical and academic focus
Affiliated centers: Advanced Endoscopy Center, Organ Transplantation Center (Biruni University Hospital).
Take the first step for your digestive health.
Call the Biruni University Hospital call center or book an appointment online.