There are testimonies of people who have been healed, but there seems to be a real lack of actual before and after medical reports to validate most of the claims. Most of the healings I have heard about are for headaches, backaches and issues of that kind. But healing of heart conditions and cancer seems to be almost non existent, or hard to prove that it was the medication that achieved the result.
One of the nastiest form of deception has been the healing evangelist who would get a word of knowledge about a person having cancer, being prayed for, and when the patient went back to the doctor, no cancer was found. The truth is that there was no cancer in the first place, and the word of knowledge was fake.
I reckon that if there were any significant healing of terminal cancer or heart disease that was or is validated by before and after xrays and blood tests, those healings would be front page news. Researchers who went and interviewed people who were claimed to be healed, discovered that these people were not healed after all, and some had actually died because after being told they were healed stopped taking their medication and did not go back for further medical checkups.
I was with a particular Charismatic church in Palmerston North NZ over 7 years during the 1970s. During that time we had most of the prominent healing evangelists come holding meetings in our local high school hall, and during the several "transdenominational" conventions held at the local racecourse. All sorts of promises and claims were made about healing. One evangelist was described as being like Kathryn Kuhlman who could tell that someone was healed through a word of knowledge. The problem was that there were no notable reports of anyone actually being healed. In some of those meetings, there was the leg lengthening which looked convincing, but now has been exposed as a fraudulent trick as shown during Todd White's manipulation of a subject's foot to make it appear that the leg had been lengthened but he actually moved the other foot which observers didn't look at. When the process was speeded up, the fraud was clearly seen.
Fraudulent words of knowledge resulting from using social media through an iphone or ipad, or pre-meeting interviews, and even in the case of one evangelist who had a hidden earpiece and his wife transmitting details to it to make it appear that he was getting a word of knowledge, has brought that side of the healing ministry into disrepute. Yet, some of these fraudsters are still doing it!
I have carefully studied all the healing ministries, from Jack Coe, Oral Roberts, A.A. Allen T.L. Osborn, Benny Hinn, Curry Blake, John Wimber, plus all the lesser known ones who visited Palmerston North during the 1970s, and I can't locate any actual verified before and after medical reports that show that cancers, heart conditions, cerebral palsy, spinal injuries, brain injuries, or blindness have actually been healed through these ministries. I have listened to 130 testimonies on a DVD of healings through Bill Subritzky, but these are hearsay, and I don't see any validation through actual medical documents.
When Jesus healed the lame, blind, disabled and palsied people, it was done in the presence of many witnesses who saw without a doubt that the person was instantly and perfectly healed. No doubt about it. Even the Jewish Pharisees who were vehemently opposed to Jesus acknowledged the authenticity of the healing miracles. No hearsay there. So, either Jesus doesn't heal everyone on demand today, or the way the healing evangelists are going about it is fake and just a means to increase their wealth through the offerings of people who believe their empty promises.