There are indeed many quantum effects, some of them quite bizarre and totally counterintuitive, quantum entanglement (what Einstein described as "spooky action at a distance") being just one of them. But in a book on the medicine of the future, it's difficult to see what particular effect might be exploited, though quantum entanglement has been invoked to "explain" avian navigation:
https://www.newscientist.com/article/dn22199-eye-bath-to-tha... not to mention Roger Penrose's interesting ideas on the working of the brain:
http://www.livescience.com/37807-brain-is-not-quantum-comput... On the other hand, many "conventional" instruments using solid-state electronics are using "ordinary" quantum effects all the time.