I have found a speach of John Paul II to US Bishops that is very interesting and here I bring only part of it that is regarding the spreading of "New Age" ideas among Catholics (emphasis from me):

"2. It is not an exaggeration to say that man’s relationship to God and the demand for a religious “experience” are the crux of a profound crisis affecting the human spirit. While the secularization of many aspects of life continues, there is a new quest for “spirituality” as evidenced in the appearance of many religious and healing movements which look to respond to the crisis of values in Western society. This stirring of the homo religiosus produces some positive and constructive results, such as the search for new meaning in life, a new ecological sensitivity, and the desire to go beyond a cold, rationalistic religiosity. On the other hand, this religious re–awakening includes some very ambiguous elements which are incompatible with the Christian faith.

Many of you have written Pastoral Letters on the problems presented by pseudo–religious movements and sects, including the so–called “New Age Movement”. New Age ideas sometimes find their way into preaching, catechesis, workshops and retreats, and thus influence even practising Catholics, who perhaps are unaware of the incompatibility of those ideas with the Church’s faith. In their syncretistic and immanent outlook, these parareligious movements pay little heed to Revelation, and instead try to come to God through knowledge and experience based on elements borrowed from Eastern spirituality or from psychological techniques. They tend to relativize religious doctrine, in favor of a vague world–view expressed as a system of myths and symbols dressed in religious language. Moreover, they often propose a pantheistic concept of God which is incompatible with Sacred Scripture and Christian Tradition. They replace personal responsibility to God for our actions with a sense of duty to the cosmos, thus overturning the true concept of sin and the need for redemption through Christ."

From  the ADDRESS OF HIS HOLINESS JOHN PAUL II

TO THE BISHOPS OF THE UNITED STATES OF AMERICA

ON THEIR “AD LIMINA” VISIT

Friday, 28 May 1993

 http://www.vatican.va/holy_father/john_paul_ii/speeches/1993/may/documents/hf_jp-ii_spe_19930528_iowa-ad-limina_en.html

Reading this I tried to search for actions of US Bishops - or theologians of Catholic Universities - in order to educate in regard of this movements - or better to say currrents - and did not find anything since then. One exception is a series of articles in the paper of the Diocese of Colorado Springs (maybe not by chance there): http://www.coloradocatholicherald.com/display.php?xrc=543

It is rather surprising - and maybe this lack of orientation is one of the main factors behind the spead with which for example Reiki spreads in Catholic hospitals, retreat houses etc.

If any of you are aware of teachings/workshops/pastoral letters and so on that shows the efforts of  the US Bishops or other authoritative voices to understand these phenomenon, I would appreciate if you let me know about it on this forum.