Just like any other surgeon, Dr. Sergio Verboonen was not "born" a surgeon. He went through extensive International training during the course of his 17 years as a Bariatric Surgeon to achieve the skill and expertise that he currently posesses. Dr. Verboonen has performed over 10,000 bariatric surgeries, and we know of no other surgeon in the world who has more experience with the gastric sleeve surgery. Dr. Verboonen is the #1 choice when it comes to experience, safety, and track record of patients on the road to success. www.international-patient-facilitators.com. 1 800 210 5124