Hi i am asian origin, has a dusky complexion, i would like to do full body melanin reduction surgery, where is this service being offered in usa?

No such thing: There is no such treatment for the whole body. If you don't like to be dark, avoiding sunlight exposure with umbrella, large hat, and a titanium or zinc sunscreen may help. There are creams to reduce the melanin production but the effect is only transient and the dose may be toxic when applied all over the body. Perhaps focusing on your face would be a more realistic. goal.