One factor is whether facilities have new state-of-the-art technology. Those that don't can't offer it. This argues just one benefit for trying to get care at the larger well-funded medical institutions. Also many, like Cleveland Clinic where I go prohibit physicians from receiving 'incentives' from pharmaceutical or medical equipment suppliers. [I think Mayo has the same policy.] I find it reassuring that my physician isn't subject to a conflict of interest in my medical care.