In September 1966 he enrolled in Holy Trinity Orthodox Seminary in Jordanville, New York, which he graduated in 1971 with a Bachelor of Theology degree.

[2] July 12, 2003, the feast of the Holy Apostles Peter and Paul at the Protection of the Theotokos cathedral in Des Plaines, Illinois, his bishop nomination was held.

Order was performed by Metropolitan Laurus assisted by Archbishop Alypy (Gamanovich) of Chicago and Detroit and bishop Kyrill (Dmitrieff) of San Francisco and Western America.

July 2, 2016, on the retirement of Abp Alypy, Bishop Peter was appointed to the Diocese of Chicago and Mid-America and elevated to the rank of Archbishop.

[4][1] June 13, 2017, Archbishop Peter was awarded the right to wear the jeweled cross on his klobuk by the Council of Bishops for his "many years of sincere service to the Holy Church".