There are a couple of reasons why it will be hard to find a US doc to do your fills. First, they don't want to put themselves in a position that could possibly get them sued. For example, if something is wrong with your band, even though they did not do the surgery, they do not want to take the chance of a patient trying to blame them. Secondly, they don't want to take that responsibility of "being on call" for a patient that they don't know anything about, past history, how the surgery was performed, you name it...