Minnesota
Two separate points here. First, the review rules are clear that a provider can earn up to her maximum possible score based on what's in her profile... NOT based on what happened in the session reviewed. For example, if a provider can get an 8 because she's "really bi" but the reviewed session was with only the one provider, she can still get an 8 if the reviewer wants to give her that score. With one exception...
... which is the second point: there's a relatively new caveat to the rules that is unfortunately one of those unwritten TER rules.
It's been covered in the Reviewer board, but not everyone has access to that or chooses to use it. Anyway, for providers new to TER, there must be evidence, from reviews or otherwise (eg ads/web site), that the provider actually performs the services that garner the extra scoring points. So it is possible for a new provider to get a 10 from the get-go, but her initial review(s) would need to mention at least 3 of the 5 "extras", or they'd need to be clearly documented elsewhere, eg her web site. Btw, there's providers who give CBJs and no CIM who can and do get 10s. Read the review rules to see how that can happen.
That is all; smoke 'em if ya got 'em. 
... which is the second point: there's a relatively new caveat to the rules that is unfortunately one of those unwritten TER rules. It's been covered in the Reviewer board, but not everyone has access to that or chooses to use it. Anyway, for providers new to TER, there must be evidence, from reviews or otherwise (eg ads/web site), that the provider actually performs the services that garner the extra scoring points. So it is possible for a new provider to get a 10 from the get-go, but her initial review(s) would need to mention at least 3 of the 5 "extras", or they'd need to be clearly documented elsewhere, eg her web site.