Do you still have your Desert Tort KarenSoCal?You're going to get different opinions on this, so it should be an interesting thread.
For me, the circumstances dictate the answer. I took my desert tortoise to an exotics vet for a wellness check, and was charged $340 !!! That's robbery! But it was good to hear that there weren't any stones growing in him or a parasite overload.
I now have a 2 year old Burmese star tortoise, and have no intention of taking him to a vet unless he gets sick. But I know he had good care before coming to me.
So I would say if you haven't had your tort very long, if you don't know what kind of care he got prior to you, if he's prone to bladder stones, is old, has probably never been to a vet...I think it's a good thing to do. But do go to an exotics vet, and be prepared for an exhorbitant cost.