Started his piano studies at the Royal Conservatory in Madrid with Professors Amparo Fuster, Pedro Lerma and Joaquín Soriano, combining these studies with his activities as viola player of the JONDE as well as violinist and harpsichord player of the Chamber Orchestra of the German School.
Completed his education at the Tchaikovsky Conservatory in Moscow, the Reina Sofía School of Music in Madrid, the Hochschule für Musik in Freiburg (Germany), the Fondazione per il Pianoforte in Como (Italy) and at the Peabody Conservatory in Baltimore (U.S.).
Claudio Martínez Mehner mainly studied with Dimitri Bashkirov, Vitalij Margulis and Leon Fleischer. He also actively participated in master classes by Murray Perahia, Alexis Weissenberg, Karl-Ulrich Schnabel, Fou Ts'ong, Dietrich Fischer-Dieskau, Mstislav Rostropovich and Ferenc Rados, among others.
Claudio Martínez Mehner was finalist at the Paloma O'Shea Santander International Piano Competition and was awarded first prizes at the following international competitions: Chimay Foundation (Belgium), Pilar Bayona (Zaragoza) and Dino Ciani (Milano).
As soloist, he has performed throughout Europe, the United States, Russia, Central America, Korea and Japan with orchestras such as Munich Philharmonic, Moscow Philharmonic, Teatro Alla Scala Philharmonic, Scottish Chamber Orchestra, Prague Philharmonic Radio Svizzera Italiana, Norddeutsche Rundfunk, Filarmonia Hungarica and several Spanish orchestras.
As a teacher, Martínez Mehner has been an assistant to Professor Dmitri Bashkirov at the Reina Sofia school in Madrid and piano teacher at the conservatories in Salamanca, Zaragoza and at the "Katarina Gurska" school in Madrid. Recently he got appointed as a piano professor at the Hochschule für Musik in Basel and at the Hochschule für Musik und Tanz in Colonia. He teaches courses in Europe, Asia and the U.S.