Metropolitan Methodios served as a member of the National Orthodox-Roman Catholic Consultations Board. As a member of the Appeal of Conscience Foundation, an Organization devoted to the cause of worldwide religious freedom for all denominations, Metropolitan Methodios traveled to Hungary in 1981, and, in the fall of 1982 he was a member of a three-man religious delegation that visited the Soviet Union. A second visit to the Soviet Union was made in September 1984. Metropolitan Methodios is a member of the Holy Synod of the Greek Orthodox Church in the United States, served on the Executive Board of the National Council of Churches and is a member of the Massachusetts Commission on Christian Unity and the New England Consultation of Church Leaders. He is listed in "Who is Who in Religion", is a member of the Standing Conference of Canonical Orthodox Bishops in the Americas and serves on various other religious boards and organizations.