Father Mark Wiesner

Father Mark Wiesner grew up in the Bay Area. His home parish was Saint Francis of Assisi in Concord. In 1990, Mark Wiesner entered Saint Patrick’s Seminary in Menlo Park, California, and was ordained a priest for the Diocese of Oakland in his home parish of St. Francis of Assisi, in Concord, CA, on June 10, 1995. After his ordination, he was assigned to several parishes in the Diocese of Oakland before becoming pastor of Saint Charles Borromeo Parish, Livermore in 2012, and of the Catholic Community of Pleasanton in 2019.

Due to his amazing talents, Father Mark has served the Diocese of Oakland far beyond his pastoral duties. During the Great Jubilee Year of 2000, Father Mark was responsible for the Diocesan liturgy which culminated the celebration of the Jubilee Year for the Diocese of Oakland on November 11, 2000. Participating in the Eucharistic Liturgy were Bishop John Cummins, more than 400 clergy, a choir of 600, a full orchestra, and an assembly of nearly 18,000 Catholics from throughout the Diocese.

In 2016, during the Extraordinary Jubilee Year of Mercy, Father Mark was commissioned by the Holy Father as a Missionary of Mercy for the Holy Year. When the Holy year concluded, Pope Francis decided the Missionaries of Mercy should continue their work, and so Father Mark continues in this role until today