In 1993 Hieromonk Joachim (Parr) established the St. Mary of Egypt Monastery at the Mercy House in Lower Manhattan.
In 1995 the community opened a small chapel for a wide range of divine services.
Hieromonk Joachim was an ardent advocate of ROCOR’s reunion with the Moscow Patriarchate. In early 2001 he was in charge of foreign affairs of the Russian Orthodox Church Outside of Russia (ROCOR).
In 2001 his monastery was included in the Patriarchal Parishes of the Moscow Patriarchate in the United States.
In 2008 the community bought a land plot in Treadwell, New York, and founded the Savior’s Desert Monastery.
On March 3, 2016, YouTube channel "Mercy House Abuse" published a documentary in Russian correcting erroneous biographical information that has been disseminated about Archimandrite Joachim Parr, and revealing cult-like and abusive practices by him:
- Abbot of New York’s Orthodox monastery to visit Belarus. Belarusian Telegraph Agency. 25.01.2013 17:51.