Hi. I was going to go to that Dr for HBOT. My mom did some research about the chambers and as long as it is a certain type it does not matter as much where you go. I can't recall the type of chamber but the one Dr S used was good but I found others nearby my home that did as well. No major hospitals do this for RSD or nerve conditions. So you have to go to a private clinic and it is not covered by insurance. From what I learned they usually know after a certain amount of uses if it is benefiting you.