Well, the good news is that between Robin Hanson's claim that we receive twice as much health care as we should and these guys' claim that "Americans only receive about half of recommended medical care", on average we're getting it pretty darned close!
Right. Also, since most published research findings are wrong anyway, it's not such a big deal that doctors don't know about them! Life is good!
A feature in Scientific American magazine casts some light on the troubled state of modern medicine.
Health Care Myth Busters: Is There a High Degree of Scientific Certainty in Modern Medicine?
Short excerpt:
Scientific American often gates its online articles after some time has passed, so I don't know how long it will be available.