I guess the laws we have right now do provide for communication and sharing of personal information in many circumstances. I guess from the sorts of problems I've heard about here today, there is a wide spectrum of situations that happen, from the patients who may lose their drugs, from those who might sell their drugs, from drugs that may be sold illegally, and the sharing for different purposes really needs to be looked at on a case-by-case basis.
Perhaps if there are certain scenarios that are more problematic in those types of situations, certainly we can find a standard response, but it would be difficult to give a complete answer to all of the problems you are facing here that would have a very simple solution.