Early in his photographic career he studied with Horacio Coppola, and later moved to Germany, where he began to photograph concerts. From 1986 on he traveled around the world documenting various places and people, publishing articles in several magazines and newspapers. Since 2004, Wertheim has photographed for international stock photography agencies in addition to exhibiting internationally. His work is housed in the Teutloff Photo + Video Collection in Bielefeld, Germany, as well as in public and private collections in Argentina, Brazil, Germany, Belgium, Russia, and Canada.