The first thing you need to do is find out what that tachycardia is. Could be a couple things, including flutter, which isn't unheard of reappearing years later. You could ask your PCP for an event monitor, find another EP and get it from them, or you could buy an AliveCor and do it yourself. Once you know what it is you'll know what your options are. If it's afib, flutter, SVT or atrial tach, you might want to consider a repeat ablation. It could be a very simple one if it's something like typical right-sided flutter. Or of course there's always medical management with drugs. In any case, there's no way to proceed until you know what you're dealing with.
In the NYC area I would probably go see Luigi DiBiase at Montefiore.