There's also clinical evidence in favor of placebo usage, that doesn't mean that placebos increase medical efficacy, it means sometimes people just need to feel good about what's happening. And people - myself included - would probably prefer seeing the same physician long term.
Given the tiny slices of time doctors seem to have for each patient, it would seem that having time and history to have actually spent time with patients and their medical background would seem to be a common sense advantage. It's good to see that borne out in evidence.