I have run into drs who want to continue to input everything into their software even though they are outsourcing the billing. First of all, if it is possible for you to get access to their system (LogMeIn, Gotomypc, or a web based program) then you could offer to do it on their system if you feel that you could handle their software. If that is not an option, then you need to tell him that if he wants to have all the info in his system too, then he will have to have someone enter it on his end. It is not as involved as it would be if they were doing the billing, because it's not his 'billing books'. I would assure him that you can provide him with any reports, at any time. That may be enough to reassure him.
Michele