I have seen clients import notes/transcriptions as results, but I don't know what the reason is - it may be the custom tasking. I have also seen solutions where the Review Document task is sent to a team. The biggest issue I see with the "team" solution is that managing the teams and task lists could become cumbersome if there are a lot of providers and teams within your organization. For example, if each provider has a separate list of users that they want tasked, then you have to define teams for each provider; managing the setup (t-table, teams, task lists) may be difficult if you have many providers, but if you can define teams per site or department, then the admin will be a little easier.
I can't think of another solution to accomplish what you are looking for.