I would avoid SMMC at all cost.
I know that some people here have had good experiences there. I have not. They badly diagnosed injuries after an accident and, by pure chance, I saw another doctor who save me from losing use of both legs.
I then started researching everything SMMC cockups in local papers and the list is impressive.
Say I am being negative if you want, having a wife who has a kidney problem, I know about it and would not come out here if I had it.