Bertsch is a member of: International Trumpet Guild (ITG), Austrian Society for Music and Medicine (ÖGfMM); German Association for Music Physiology and Musicians' Medicine (DGfMM), Member of the International Liaison Committee for Performing Arts Medicine, Performing Arts Medicine Association (PAMA); German Society for Music Psychology (DGM); Society of Interdisciplinary Musicology (CIM); Austrian Society for Musicology (DGfMW); Various academic Committees at the University of Music and Performing Arts Vienna.
Je avtor več knjig in člankov na tiskanih in spletnih medijih ter sodeluje v znanstvenih TV oddajah v Avstriji (ORF) in Nemčiji.