Endoscopic examinations: esophagogastroduodenoscopy, colonoscopy. Coloproctology (minimally invasive and classical treatment, (LHP). Endoscopic surgeries: endoscopic ligation of esophageal varices, endoscopic polypectomies of the stomach, colon, endoscopic hemostasis in gastrointestinal bleeding, operations on the bile ducts (papillotomy, stenting of the common bile duct). Treatment of obesity: intragastric ballooning. Laparoscopic and open treatment of hernias of the anterior abdominal wall (ventral, umbilical, inguinal); in cholelithiasis. Providing urgent surgical care in acute abdomen.