@abundancer--My friend is an energy work healer and is certified. According to her, this means she has completed an extensive training and education program and has shown she is competent to practice.
There are some schools that have accredited programs for various forms of energy work. The best thing to do is find out where your healer went to school and how many hours the program was. Search the school to make sure it is not a diploma mill and one of the accredited programs, this should put your mind at ease.
Of course, this is a new profession as far as licensing goes, so I always go with referrals from people I trust.