We always bring our contract, a sheet we have them complete (or we complete with them) of all of their demographics (legal business name, EIN, NPI, PTAN's, address, etc) and we also bring any electronic contracts that we know we need signed. For example, our local BC requires contacts signed by the provider to submit electronically. We can't bring the Medicare EDI paperwork because we don't have the info needed to do the forms online before the meeting, so we advise them that we will be faxing those over.
That's about all we bring! Good luck.