Answer:
Join the Yahoo Helminthic Therapy Forum (http://health.groups.yahoo.com/group/helminthictherapy/) who will automatically send you a detailed FAQ that lists the current providers of the therapy, plus a lot more valuable information.
You will also get a list of over 180 accounts of success with the therapy across more than 50 conditions, and you will have access to an archive of 8,000 posts from over 1,000 forum members.