Although claims of faith healing have been made throughout the years, no systematic investigation of the claims have revealed that any of them were valid. See more here.
This account from the above site:
“The most comprehensive examination of contemporary “healers” is James Randi’s The Faith Healers . The book describes how many of the leading evangelistic healers have enriched themselves with the help of deception and fraud. Some of Randi’s evidence came from former associates of the evangelists who got disgusted with what they had observed.
“Randi’s most noteworthy experience was the unmasking of Peter Popoff, an evangelist who would call out the names of people in the audience and describe their ailments. Popoff said he received this information from God, but it was actually obtained by confederates who mingled with the audience before each performance. Pertinent data would be given to Popoff’s wife, who would broadcast it from backstage to a tiny receiver in Popoff’s ear. After recording one of Mrs. Popoff’s radio transmissions, Randi exposed the deception on the Johnny Carson Show. First he played a videotape showing Popoff interacting with someone in the audience. Then he replayed the tape with Mrs. Popoff’s voice audible to illustrate how Popoff used the information.”
Sorry, fell asleep before I finished the post last night.