Dr. Chastanet is experienced in surgical sciences and organ transplant, anatomy and immunology. After practicing general and digestive surgery for many years, and then mini-invasive coelioscopy surgery, he specialized in varicose vein treatements. Dr. Chastanet is a member of many different societies: French Society of Phlebology, French Society of Vascular Surgery, European Society of Phlebectomy, European Society of Health and food, European Venous Forum, the American Venous Forum and American College Of Phlebology.He actively participates and attends the international meetings of these societies, working on research on venous disease. Doctorr Chastanet is the Research Chairman of the Riviera Vein Institute. He has also been titled as Professor of San Salvador University at Buenos Aires, Argentina.