I have Medisoft v9 single-user with one of my nurses trained in office billing and running the billing out of her home (2 small children necessitated the temporary career change). We'll have to go to v11 or possibly v12 with the NPI requirement, but I see no need to purchase the network version since AC has a scheduler, demographics, and can produce superbills--which my biller will enter into Medisoft. Of course, the AC PM option is the best. The question is when. It's going to cost me some extra cash now to wait for Jon's product.