The Most Reverend Oscar A. Solis was ordained a priest on April 28, 1979 for the Diocese of Cabanatuan. He was appointed Bishop on December 11, 2003 and ordained on February 10, 2004. He served as Auxiliary Bishop of the Archdiocese of Los Angeles until his appointment on January 10, 2017, as the Tenth Bishop of Salt Lake City.

He was installed on March 7, 2017 in the Cathedral of the Madeleine.