I don't have a great data source for hospitals to cross reference, but I suspect hospitals are better represented than other POIs in OSM. Hospitals generally ha

I don't have a great data source for hospitals to cross reference, but I suspect hospitals are better represented than other POIs in OSM. Hospitals generally have very large and distinctive building footprints, which means "armchair mappers" using aerial imagery can still map them. If I was looking at clinics, I believe this would be a bigger problem, because they're indistinguishable from other retail businesses in the aerial imagery.