Dr. Brenner on Press-Ganey

I'm becoming aware of more and more frustration about those Press-Ganey scores. Dr. Brenner recently posted a nice little rant and listed several reasons why PG scores are meaningless:

First is that Press-Ganey has a complete monopoly. They are accountable to no one, despite their less-than-scientific method of procuring data. If I practiced medicine in the same "Evidenced Based" manner that the Press-Ganey does, I'd lose my license.

She listed several more.

Background: PG scores have not been vetted by research quality data.