||• Research Fellow School of Medicine, University of Harvard, Boston, USA
• 1977-1983 Specialization in Neurosurgery Evangelismos Hospital, 401 General Military Hospital, Children N.I.M.T.S "Holy Wisdom», Newcastle General Hospital UK
• 1983 - 1984 Registrar and Clinical Assistant in Neurosurgery, National Hospital for Nervous Diseases Queens Square London UK
• 1984-1986 Registrar & Senior Registrar in Neurosurgery, Newcastle Upon Tyne England UK
• 1987 Senior Registrar in Neurosurgery Walton Hospital Liverpool, England
• 1988-89 Research Fellow Massachusetts General Hospital, Brigam and Women's Hospital, Children's Hospital, Boston USA
• 1990-1994 Director of Neurosurgery E.S.Y. hospitals Achilleiopoulio Volos Hospital, Children's Hospital "Agia Sophia"
• 1994 - to date Neurosurgery exercise profession in Private