This article on "sacred cows" describes one organization's experience with the de-implementation of unneccessary care.  We like its innovative approach.

Sacred cow gone to pasture: a systematic evaluation and integration of evidence-based practice.  Hanrahan K, Wagner M, Matthews G, Stewart S, Dawson C, Greiner J, Pottinger J, Vernon-Levett P, Herold D, Hottel R, Cullen L, Tucker S, Williamson A. Worldviews Evid Based Nurs. 2015 Feb;12(1):3-11. doi: 10.1111/wvn.12072. Epub 2015 Jan 28. >> read