Gastroparesis and RNY surgery

Thanks for all of the input. GP is a very complicated problem. My husband has not lost any weight (go figure) but has complained of protracted vomitting for over a year now. Originally he had an EGD by a GI doctor but unfortunately the GI doctor thought it would be a good idea to have his colonoscopy done on the same day at the same time. This sounded logical and appropriate but it turns out that the prep for the colonoscopy and the restricted diet for the 2 days prior to the procedures may have prevented the GI from noting the GP. My husband spent the last year with these horrible bouts of vomiting which kept him from returning to any form of employment all the while being told there was nothing really wrong with him. His diabetes was worsening, his blood pressure was rising, his blood work was all out of wack etc etc etc. I was finally able to convince him that if he lost weight he could maybe control his diabetes and all of his other medical problems would benefit as well. We were shocked to learn at the time of his second EGD by Dr Schlesinger that he had GP. The GP diagnosis has now been confirmed by motility studies of the stomach and he is going to have another EGD next week to check his pyloric valve and make sure that there is no obstructions or fiber balls in his stomach. At that point we should be able to have a clear understanding of whether or not RNY surgery would be beneficial to him. It seems reasonable to me that it would be a huge improvement since the pyloric valve is by-passed with the RYN surgery. The medication he was placed on 2 months ago (sorry I can't remember the name) is starting to cause the jerks and movement that I mentioned but only during his sleep at this point. His GI doctor has added erythromycin and a drug from Canada called domperione which he will be starting in a few days. He has mentioned that if the drugs don't work, he may send him to the Mayo Clinic here in Scottsdale to have him evaluated for either a feeding tube or the pacemaker. While we are happy to know what has been causing his problems for over a year, it doesn't seem like any of the treatments for GP are going to offer him much in the way of relief. All the literature I have read says that nothing is very effective in treating this very difficult disease.
Dr Schlesinger has moved his practice far away from us so I am going to need a new bariatric doctor in the Northwest, Northeast Valley in Arizona. Any recommendations would be appreciated.