• Liver, pancreas and biliary tree surgery
• Surgery of the gastrointestinal tract
• Oncological surgery
• Endocrine surgery
• Minimally invasive surgery

• Ophthalmology
• Vitreo-retinal Surgery
• Medical Retina
• Cataract
• Glaucoma
• Pediatric Ophthalmology

• Interventional Endoscopy
• HIV and AIDS
• Hepatology
• Teaching and Clinical Research (including Clinical Studies)

• Coronary artery disease
• Myocardial infarction
• Heart failure
• Cardiac arrhythmias
• Pacemaker- and ICD therapy
• Interventional electrophysiology

• Diagnostic and interventional Neuroradiology
• Since 1998 full certification as official teacher in Neuroradiology Medical Association (Mecklenburg-Vorpommern and Berlin, Germany)
• Since 1998 partial certification as official teacher in Diagnostic Radiology Neuroradiology Medical Association (Mecklenburg-Vorpommern and Berlin, Germany)
• 2013 DEGIR certification and offical teacher in endovascular Neuroradiology of the German Society of Neuroradiology (DGNR)

• Internal medicine
• Gastroenterology
• Hepatology
• Infectious diseases
• Interventional endoscopy
• Inflammatory bowel diseases
• Viral hepatitis, chronic liver disease, and liver cirrhosis
• Acute and chronic pancreatitis
• Gastrointestinal oncology

Specialised colorectal surgeon and proctologist

• Proctology:
  Hemorroids, anal fistula, anal cancer & pre-cancer lesion (AIN), skin tags, anal fissure & prolaps, anal scars & strictures, fecal incontinence, condyloma, proctodermatology, anal pain and itching.
• Rectal surgery:
  Rectal cancer and adenomas, constipation, fecal incontinence, outlet-syndrome & obstructive defecation, rectal pain, rectal stricture and fistula, rectovaginal fistula
• Colon surgery:
  Colon cancer, constipation, Stomal prolapse and strictures, removal of colostomy, complex malformation, Crohn disease & Colitis ulcerosa, diverticular disease

• Bipolar disorders
• Psychosis
• Psychotic disorders
• Trauma disorders
• Addiction Medicine

• Surgery of Carotid Artery (Carotid Stenosis as a cause of stroke)
• Surgery and Endovascular Therapy of Aortic Diseases (Aortic Stenosis, Aortic aneurysms, Aortic Dissections)
• Laparoscopic Aortic Surgery
• Laparoscopic Treatment of Entrapment-Syndrome
• Surgical and Endovascular treatment of peripheral arterial disease
• Access-Surgery for hemodialysis (in case of kidney failure)
• Surgery and radiowave ablation of varicose veins
• Resection of vascular tumours (paraganglioma etc.)

• Spinal Neurosurgery (Degeneration, Trauma, Tumor, Infection)