Gastro SB is a San Diego Gastroenterology Service and Weight Loss Clinic that specializes in Weight Loss & Digestive Diseases. Erick Alayo, M.D., Gastroenterologist, and Romina Waisbaum, registered dietitian lead the Gastro SB Clinic, offering comprehensive treatment for a wide range of gastrointestinal and nutritional conditions. Weight loss treatments include Gastric Sleeve and Gastric Balloon.