Diamantis Tassopoulos graduated from the Department of Dental Technology at the Technological and Educational Institute of Athens in 1999 and received his diploma from the Dental School of the National and Kapodistrian University of Athens in 2005. He served as a clinical instructor at the Department of Fixed and Removable Prosthodontics of the University of Athens from 2006 till 2012.
Adhesive dentistry is his field of interest and therefore since 2014, he lectures in dental seminars regarding direct and indirect bonded restorations. He has participated with numerous scientific presentations in national and international congresses. Since 2007 he maintains a private office in his homeland, the city of Elefsina.