I don't think you can compare that "stem cell doctor" with the better IRs/Vascular surgeons. He was telling his patients, that he was putting in human stem cells, when that turned out not to be the case:
From the BBC
"They were all vulnerable patients who already found themselves failed by the medical profession in this country and as a result were searching, some with desperation, for a cure or relief elsewhere, which is why and how they ended up in Dr Trossel's hands," Mr Kark told the haering.
"They were given false hope by him and the experience not only cost them financially but for the most part it caused them personal and emotional loss when they realised that the treatment provided to them was not only expensive but pointless."
The treatment also contained bovine brain and spinal cord, and the GMC panel ruled he had abused his position as a doctor by failing to warn patients about potential risks of vCJD.
I agree that some of these clinics opening up are dubious, but the doctor who worked on my husband, for instance seems to be driven more by discovery than money...she is not advertising "packages". I believe she has started a study and I look forward to hearing what she might learn. At this point, if my husband was not so disabled, I would wait a year to have anything done. We don't have the time to wait, unfortunately, but that doesn't mean I would trust him to any doctor either. People do need to think about this before they go ahead, and whether or not they could cope with a clot situation, which seems to be happening a lot.