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.
In early 2001 he was briefly in charge of foreign affairs of the Russian Orthodox Church Outside of Russia (ROCOR).
In August of 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.
In 2016, YouTube channel "Mercy House Abuse" published documentaries in Russian and English disputing false biographical information that has been disseminated by Archimandrite Joachim Parr, and exposing 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.