He first arrived in America in 2001, and was accepted into
Boston University the following year, conferring him a Master of Sacred Theology in 2004. From 2004 to 2008 he served as dean of the Cathedral of St. Demetrios in
Astoria,
New York, and received the Citation of Honor for his “profound devotion to the Greek Orthodox Church and to the Greek American Community” during the Greek Independence day celebrations on March 20, 2008. In March 2009, he was appointed director of the Archdiocesan Hellenic Cultural Center in
Washington, D.C. until November 2011 when he was moved to the Chancellor of the
Metropolis of San Francisco under
Metropolitan Gerasimos. On November 28, 2014 he was elevated to rank of auxiliary bishop and given the title of Bishop of
Medeia. He also was appointed as Chief Secretary of the Holy Eparchial Synod of the Greek Orthodox Archdiocese of America in 2018 and Spiritual Advisor of the Greek Orthodox Ladies Philoptochos Society in 2019. Koufallakis was also tasked with planning of the ceremony of the enthronement of
Archbishop Elpidophoros which took place on June 22, 2019. He was also appointed member of the
Holy Synod of the Phanar that same month. ==References==