I've been to one for vacs, it was fine but the doctor didn't ask me any questions or check anything about my med history, I was going to Sri lanka so my dp and I had worked out what vacs I would need, doc just took my word for it, didn't ask about allergies etc, check if I had asked for all the right jabs.. It was all perfectly clean Etc though .
Well it all looked very professional, vaccines and needles still in their packets etc.. I'm pretty sure it's a well established brand. As I said, know your facts before you go or at least know all the right questions to ask as mine didn't waste time on the niceties!