I agree that results are what matter. ("By their fruits shall ye know them." Matthew 7:16.)
Availability of reiki (and other alternative modalities) for patients varies by individual clinic/hospital in the U.S. At the clinic where my father got his chemotherapy, there was a program in which reiki volunteers were available for appointments to work on the patients and their caregivers. (Dad wasn't interested in it though; instead, he just wanted Mom to do energy work on him.)
But of course there are other views. E.g., some Catholic hospital administrators -- concerned because they believe that reiki is not Christian -- have taken a position that reiki shouldn't be allowed in their wards. (To which I'd say, "'By their fruits shall ye know them.' Matthew 7:16.")
Bruce