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Department of internal medicine

Dr. Mahmut Demirci
internal medicine

About the department

The department of internal medicine at Memorial Sisli Hospital Istanbul deals with diagnosing and treating diseases of the internal organs in patients over 15 years of age. It conducts essential research on disease prevention, as well as early diagnosis of diseases. In addition, the department's medical team works on screening for various diseases and raises patient awareness of possible complaints and the steps to be taken in treating existing conditions. The department is equipped with the necessary technologies for fast and accurate diagnostics, including ultrasound, radiological and endoscopic methods. An individual treatment plan is drawn up for each patient based on the clinical picture.

The highly specialized doctors of the department have exceptional experience in the conservative treatment of diabetes mellitus, high blood pressure, liver, kidneys, blood and digestive system, infectious diseases, hormonal disorders and obesity. Patients with symptoms that may indicate a severe illness are evaluated by a multidisciplinary team involving cardiologists, gynaecologists, urologists, gastroenterologists, oncologists and other professionals. The department of internal medicine provides the highest level of service achieved by modern medicine.

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Treatment and diagnostic focus of the department


  • Familial Mediterranean fever
  • Swine flu
  • Fibromyalgia
  • Gout
  • Hematomas
  • Hypothyroidism
  • Drug allergy
  • Insulin resistance
  • Diarrhoea
  • Chronic fatigue syndrome
  • High blood pressure (hypertension)
  • Obesity
  • Rheumatism
  • Herpetic disease (herpes simplex)
  • Pneumonia


  • Anamnesis
  • Physical examination (palpation, auscultation)
  • Laboratory tests (blood, urine)
  • Lipid profile (cholesterol and triglycerides)
  • Hormone panel (thyroid, adrenal and reproductive glands)
  • Kidney function tests (albumin to creatinine, glomerular filtration rate)
  • Liver function tests (ALT, AST, bilirubin, albumin, total protein)
  • X-ray of the lungs
  • Electrocardiography
  • Endoscopy (gastroscopy, colonoscopy)
  • Ultrasound examination
  • Computed tomography (CT scan) 
  • Magnetic resonance imaging (MRI)
  • Doppler and duplex tomography
  • Mammography 


  • Drug therapy 
  • Pain relief management
  • Immunotherapy 
  • Hormone therapy  
  • Chemotherapy 
  • Radiotherapy 
  • Physiotherapy 
  • Screening of diseases 
  • Minimally-invasive therapy
  • Laser therapy 
  • Manual therapy 
  • Other treatment services 
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Doctor profile


  • 2002 - 2006 Internal Medicine Specialization Training, Gata Haydarpasa Training and Research,  Istanbul, Turkey
  • 1993 - 1999 Medical Doctor Education, Gata Military Medicine Faculty, Ankara, Turkey


  • 2017 Internal Medicine specialist, Memorial Sisli Hospital, Istanbul, Turkey
  • 2006 - 2017 Chief Physician of Internal Medicine Department, Heybeliada Sea High School,  Istanbul, Turkey
  • 2000 - 2002 General practitioner, TCG Gelibolu Frigate, Muğla, Turkey

Awards, memberships, publications

  • Istanbul Medical Chamber
  • 42 Medical Articles, Posters and Oral Presentations Published in Various National/International Journals and Congresses
  • Inflammation, Adipose Tissue and Adipocytokines in Type 2 Diabetes
  • The Relationship Between Left Ventricular Mass Index, Insulin Resistance and Serum Adiponectin Levels in Type 2 Diabetic Cases
  • The Relationship Between Serum Superoxide Dismutase Activity, Insulin Resistance, and Platelet Morphology in Type 2 Diabetic Patients
  • Antioxidants, Oxidative Stress and Endothelial Dysfunction in Type 2 Diabetes
  • Change in Distribution Rates of Fever of Unknown Cause in Turkey - A Multicenter Study
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