Not that they should anyway, but there's a reason people don't choose their hospital for delivering the kid based on the street cred of the artist who did the maternity ward murals.
I'm sure that occasionally bums out the executives at Woodhull Hospital in Bed-Stuy/Bushwick, because that's one maternity ward ranking they would totally dominate.
"The Keith Haring maternity ward mural runs down the whole corridor and dates to 1986." [hragv's instagram]
On the remarkable percent-for-art golden age that filled Woodhull with art: For Post-op, a Dose of Pop Art at Brooklyn Hospital [nytimes, 2002]