S.R. Constantin's after-action report on MetaMed had a lot of this, like what happened when they decided that doctors were statistically illiterate and did not know about the power of checklists:

Some of our founding inspirations were the work of Gerd Gigerenzer and Atul Gawande, who showed that medical errors were the cause of many deaths, that doctors tend to be statistically illiterate, and that systematizing tools like checklists and statistical prediction rules save lives. ... Many of the improvements in systematization that were clearly “good buys” have, in fact, been implemented in hospitals since Gawande and Gigerenzer first wrote about them. We never saw a clear-cut case of a patient whose doctors had “dropped the ball” by giving them an obviously wrong treatment, except where the patient was facing financial hardship and had to transfer to substandard medical care. I think doctors don’t make true unforced errors in diagnosis or treatment plan that often; and medical errors like “operating on the wrong leg” that happen in fast-paced decisionmaking environments were necessarily outside our scope.

They also found that base rates work much better than personalized medicine which is exactly what Kahneman and Tversky find.