I don't have any to personally recommend, but I know you shouldn't have a problem finding a plastic surgeon in the U.S. that does jaw reduction surgery.
If it's any help, jaw shaving is most popular for Asian ethnicities since they tend to have larger jaws (compared to many Caucasians who have the opposite, so they wish to make theirs bigger). So it might help to look for plastic surgeons that are known to specialize in Asian faces. There are a couple around me (and I know they do jaw reduction) but I don't remember their names. If you get desperate, let me know and I can try and find their names