I am currently being treated with acupuncture for MS, for which my varying symptoms include neuropathy of the feet (tingling). About 2 weeks ago he did a treatment that dealt specifically with conductivity between nerves and the brain and I felt a BIG difference the next day. We've also talked extensively about circulation and that's been part of my treatment (he's referred to "stagnation" a lot).
The truth is, symptoms can come and go with MS so it's hard to say if the improvement I'm feeling in general is definitely attributable to this but based on a previous experience, I am a believer. IF there is no imminent danger in your father delaying conventional treatment I'd recommend at least trying it. You do have to be diligent though and give it probably around at least a month. I would think they'll probably start off with 2 treatments a week (it's not cheap but sometimes they'll work out a deal.) You do need to do your homework though to find a great one. I think the world of the one I have now but had checked out others before in whom I didn't have faith or confidence. Lastly, it's an added benefit if the acupuncturist is also an herbalist -- try to find one who is.
Good luck and let us know how you make out!