I am sorry, I can't help you find a doctor in New York as I live in the UK.
I just wanted to introduce myself:
My name is Alison, I am 12 years old (nearly 13) and I suffer from RSD in my left leg and right arm. I first developed RSD in my leg on the 16th March 2007 after an ankle sprain, I was diagnosed with RSD/CRPS type 1 4 months later. I was later prescribed "Amitriptyline" to try and help me sleep, but I suffered from a nasty side effect of "blurred vision", this resulted in a knock to my right arm ... I was diagnosed with RSD 2 weeks later. The RSD in my arm as been in remission but the RSD keeps flaring up.
I am currently off school (I can't go due to pain and mobility issues), but I am starting home and online tuition in the near future.

I have not had the ketamine coma treatment, but I know of some people who have had it.
I hope these website helps you:
http://www.webmd.com/video/ketamine-chronic-pain
http://www.mapinc.org/tlcnews/v05/n1371/a03.htm?158
http://www.reachforrecovery.net/ketamine.html

If you need anything just ask. I will be happy to help you, If I can
Take care