Gastric Sleeve Surgery. Sleeve gastrectomies — better known as “Gastric Sleeve Surgeries” — are the most common type of bariatric weight loss procedures and now make up more than 60% of all such procedures in the United States. Dr. Sergey Terushkin, a renowned leader in the bariatric surgery field, performs gastric sleeve procedures regularly using a minimally invasive, laparoscopic technique.