Our office does this, We export AC data to EZclaim and then submit through GatewayEDI. There were a few glitches at first, but within a week or two we were running smooth. Now it works really well, and rejections are rare. The remits come back through the clearinghouse and we manually post into EZclaim. We then export the pt statements to a 3rd party who prints and mails them. I think it is a great system and relatively inexpensive.