Crommelin comes from an artistic family. His grandmother was a concert pianist. He began learning piano when he was seven. He studied at the Sweelinck conservatory in Amsterdam. At eight years of age het appeared in a student concert in the small hall of the Concertgebouw. Further studies led it at the conservatory to Geneva where he received 1975 a premier Prix with honor for its interpretation of works of Béla Bartók, César Franck and Sergei Prokofjew. Crommelin appeared then also some years as a pianist before it changed to the acting.
Crommelin became as an actor above all through its rolls into different child film and child series well known. played 1997 in the youth film Mijn fringe aunt gauze Usa the role of the Vader Tekelenburg. In the family film Otje, a filming of the novel of Annie M. G. Schmidt, embodied it 1998 the roll of the doctor Spijker. He attained special familiarity also through its roll as a butler Hopjes in the Comedyserie tone what geluk heel gewoon. In the Dutch Comedyserie Loenatik, a series over the inmates of a psychiatric clinic, he played the role of the director Bomhoff that is busied continually with computer game.
Since 2006 it has played the house Anubis in the Dutch version of the TV series the series roll of the sly and insidious overseer Victor Emanuel Rodenmaar.
Crommelin works also as a speaker for radio play (mayor thick cover in army Bommel) and in advertisements. Crommelin lives in Haarlem.