Locate a Bariatric Surgery Center of Excellence or bariatric Surgeon of Excellence. Surgical Review Corporation (SRC) has designated 64 hospitals as Metabolic and Bariatric Surgery Centers of Excellence. Minimum volume is 80 cases per year for a Center of Excellence. For a Bariatric Surgeon of Excellence, minimum volume is 50 cases per year, and 125 cases in a lifetime. SRC is a non-profit patient safety organization that develops and administers health care accreditation programs. In addition weight loss surgery, it promotes high standards for other types of surgery. List of centers by state; includes US, UK, Canada, Mexico and about 20 other countries.