Obesity is one of the most pressing health problems with high medical and socio-economic significance, which causes an increase in the number of bariatric surgeries performed, which are universally recognized as the most effective and long-term in reducing excess body weight and regressing the manifestations of metabolic syndrome. In proportion to the increase in the frequency of these surgical interventions, the number of centers performing them is also increasing, and, as a consequence, the need to assess the dynamics of changes in trends in bariatric surgery on a national scale becomes obvious. This determined the need to create a multifunctional tool that meets modern requirements for computer programs, which would allow for a full and high-quality assessment of the work of clinics in this industry. This instrument is the Russian National Bariatric Registry «Bareoreg». This article is devoted to demonstrating the capabilities of «Bareoreg» in a comprehensive assessment of general and individual data obtained from bariatric surgeons of the Russian Federation, as well as changes in trends in this industry in our large country.