My cofounder and I are currently working on a start-up in this area, so I'm curious to what 'foolishness' you've seen.
1) Tests, often uncomfortable, which were already done, only stopped because I informed the staff that they had been run only hours earlier.
2) Medicines which had been marked as not to be administered due to adverse reactions, readministered due to lack of documentation or notification.
3) Physical disks containing MRI data transferred personally, but utterly useless because of format problems