Best place for shockwave lithotripsy(kidney stone treatment) in assam?

I’m need recommendations on doctors or hospitals to get my lithotripsy done (for kidney stones). I have very negligible amount of 4 stones in one of my kidneys one of which is passing.The doctor i consulted says with surgery only the one that is passing can be removed. He says i will have to do the surgery for each of the stones. But i came to know about this procedure shockwave lithotripsy which can treat all the stones together. So if any of you or anyone you know has had this surgery before please provide me some information about the place or the doctor...