Do people really check Yelp for hospital reviews? I live in a reasonably rural area, but even we have a couple of hospitals within reach. It never really occurred to me to not go to the nearest one for emergencies. I couldn't imagine a deep gash in my leg or my child screaming and me on my phone looking up hospitals.
Although then again, I suppose the argument will then become that I can ask Siri for the closest hospital (travel time) with the shortest wait time total.