Holy Apostles is part of the Greek Orthodox Archdiocese of America. The website of the Archdiocese is http://www.goarch.org. For basic information on the Archdiocese, see below:
8-10 East 79th St. New York, NY 10075
Tel: (212) 570-3500 Fax: (212) 774-0251
The Greek Orthodox Archdiocese of America, with its headquarters located in the City of New York, is an Eparchy of the Ecumenical Patriarchate of Constantinople.
THE ORTHODOX CHURCH
The Orthodox Church today, numbering over 250 million worldwide, is a communion of self governing Churches, each administratively independent of the other, but united by a common faith and spirituality. Their underlying unity is based on identity of doctrines, sacramental life and worship, which distinguishes Orthodox Christianity. All recognize the spiritual preeminence of the Ecumenical Patriarch of Constantinople who is acknowledged as primus inter pares, first among equals. All share full communion with one another. The living tradition of the Church and the principles of concord and harmony are expressed through the common mind of the universal episcopate as the need arises. In all other matters, the internal life of each independent Church is administered by the bishops of that particular Church. Following the ancient principle of the one people of God in each place and the universal priesthood of all believers, the laity share equally in the responsibility for the preservation and propagation of the Christian faith and Church.
Before the establishment of an Archdiocese in the Western Hemisphere there were numerous communities of Greek Orthodox Christians. The first Greek Orthodox community in the Americas was founded in New Orleans, LA by a small colony of Greek merchants. History also records that on June 26,1768 the first Greek colonists landed at St. Augustine, FL, the oldest city in America. The first permanent community was founded in New York City in 1892, today’s Archdiocesan Cathedral of the Holy Trinity and the See of the Archbishop of America. The Greek Orthodox Archdiocese of North and South America was incorporated in 1921 and officially recognized by the State of New York in 1922.
The Greek Orthodox Archdiocese of America is composed of an Archdiocesan District — New York and eight Metropolises: New Jersey, Chicago, Atlanta, Detroit, San Francisco, Pittsburgh, Boston and Denver. It is governed by the Archbishop and the Eparchial Synod of Bishops. The Synod of Bishops is headed by the Archbishop and comprised of the Bishops who oversee the ministry of the Metropolises. It has all the authority and responsibility which the Church canons provide for a provincial synod.
There are 540 parishes, 800 priests and approximately 1.5 million faithful in the Greek Orthodox Archdiocese of America. The Archdiocese receives within its ranks and under its spiritual aegis and pastoral care Orthodox Christians, who either as individuals or as organized groups in Metropolises and Parishes have voluntarily come to it and which acknowledge the ecclesiastical and canonical jurisdiction of the Ecumenical Patriarchate.
The mission of the Archdiocese is to proclaim the Gospel of Christ, to teach and spread the Orthodox Christian Faith, to energize, cultivate, and guide the life of the Church in the United States of America according to the Orthodox Christian Faith and Tradition.
The Greek Orthodox Church in America sanctifies the faithful through divine worship, especially the Holy Eucharist and other Sacraments, building the spiritual and ethical life of the faithful in accordance with the Holy Scriptures, Sacred Tradition, the doctrines and canons of the Ecumenical and local Councils, the canons of the Holy Apostles and the Fathers of the Church and of all other Councils recognized by the Orthodox Church.
The Archdiocese serves as a beacon, carrier, and witness of the message of Christ to all persons who live in the United States of America, through divine worship, preaching, teaching, and living of the Orthodox Christian Faith.
(Taken from http://www.goarch.org/archdiocese/about)