In 1983, he earned a Master of Divinity degree from St. Vincent de Paul Regional Seminary in Boynton Beach, Florida.

[1] On September 23, 1983, Noonan was ordained a priest by Archbishop Edward McCarthy for the Archdiocese of Miami at St. Paul of the Cross Church in North Palm Beach, Florida.

[1] Noonan was appointed dean of men at St. John Vianney (1989–1993), then priest in residence at St. Rose of Lima Parish in Miami Shores, Florida (1993–1994).

[5] On June 15, 2017, Noonan attended a memorial service at St. James Cathedral in Orlando for the victims of the 2016 Pulse nightclub shooting in that city.

"[6]On August 30, 2018, Noonan removed Reverend David Gillis, parochial administrator of the Our Savior Parish in Cocoa Beach, Florida.