People who worry about death panels are missing the forests for the trees. Yes, people with expensive-to-treat conditions may someday be denied life-saving treatment because of ObamaCare. But there is a far greater danger for ordinary mortals: government and its health insurance proxies telling doctors how to practice medicine. In treating patients with various symptoms, doctors are increasingly pressured to follow guidelines or protocols. This "cookbook" approach to medicine is the opposite of personalized medicine — an approach which aims to tailor the therapy to the characteristics of the patient, including her genetic makeup. Before criticizing it, let me say...