Dmitry Korostelyov was born in 1979 in Volgograd and took his first piano lessons there. He graduated from the Moscow Conservatory in 2003 (from the composition class of Alexey Nikolayev). He completed his composition studies in the post-graduate course of the Moscow Conservatory in the class of Valery Kikta; in the harpsichord class he was assistant to Tatiana Zenaishvili.
At the Rimsky-Korsakov Wind and Percussion Instruments Competition in St Petersburg (2005) he was awarded the Best Accompanist Prize. As a pianist, he has performed with the Russian State Symphony Orchestra, Volgograd Philharmonic Orchestra, and Russkaya Conservatoria Chamber Capella. He appears as pianist and harpsichordist in many Russian cities.
He has made three recordings of the music of Nikolay Peyko and Mieczysław Weinberg for Toccata Classics. In December 2014 Dmitry Korostelyov was ordained to the diaconate of the Russian Orthodox Church by Metropolitan Hilarion (Alfeyev) of Volokolamsk.