Father Kleanthis Korkotas was born in New York City on December 7, 1963. He was raised in Astoria, New York with his two sisters, Georgia and Evangelia. At a very young age Fr. Kleanthis became the spiritual son of His Eminence, Metropolitan Petros of Astoria. Under the guidance of Metropolitan Petros, Fr. Kleanthis grew up at Saint Markella's Cathedral in Astoria. Here he learned what it meant to be an Orthodox Christian.

In 1985, Fr. Kleanthis graduated from St. John’s University. In 1989, he graduated with a Master's degree in History/education, and became a teacher. In 1993 Fr. Kleanthis married his wife Konstantina. This year he also received a second Master's degree in School Administration. In 1996, after the birth of his first son Stefano, he was ordained a Deacon by Metropolitan Petros. It was Metropolitan Petros’s last ordination.

In 1998, Fr. Kleanthis was ordained a priest by his Eminence, Metropolitan Pavlos of North and South America. It was Metropolitan Pavlos’s first ordination as a hierarch. In 1999, Fr. Kleanthis was made Presbyter of Saint Isidoros Church in Bethpage, New York. In November 1999, His second son, Pavlos, was born. Fr. Kleanthis has been a teacher and assistant principal for over twenty years. He was elevated to the rank of Protopresbyter and continues to serve as the pastor of St. Isidoros Orthodox Church in Bethpage, New York.