 In 1951 he graduated at the Lyceum of Adam Mickiewicz in Żychlin.Indrzejczyk was ordained to the priesthood on 8 December 1956 by Bishop Stefan Wyszyński.First he was the vicar in Drwalew and Grodzisk Mazowiecki, then in St. Alexander's Church in Warsaw,
St. Mary's Church in Warsaw New Town and Church of Our Lady of Loreto in Warsaw.