Dr Berreni holds a medical degree from Nancy university. He then specialized in surgical gynecology and became head of obstetrics department of Foix and Pamiers hospitals in 1981. Dr Berreni holds a plastic and maxillofacial surgery university diploma from Paris 12, and has also graduated from the face and neck institute (Sophia Antipolis university). He is currently practicing as a gynecologist-obstetrician in Perpignan.