There is growing interest among hospitals in reengineering. It promise
s dramatic improvements in performance: Casts will be reduced while wo
rk processes, productivity, and patient care will all improve. A revie
w of the health care literature on reengineering shows that little evi
dence exists to support its claims. This article critiques the existin
g literature on reengineering and addresses the conundrum hospital exe
cutives encounter when faced with the decision to adopt a new manageme
nt technique-such as reengineering-in the absence of proof of its effi
cacy.