US government tracks your prescriptions and shares them with police.

States are trying to outsmart the criminals by tracking prescriptions through statewide databases and by toughening their laws to make it more difficult for unscrupulous clinics to dispense large numbers of prescription pain pills. And in the latest move against drug tourists, states are linking their databases to try to stop dealers from roaming state to state.

All but two states — Missouri and New Hampshire— have enacted laws that set up prescription drug monitoring programs.
The databases track prescriptions so doctors can access patients' records to determine whether they already have multiple orders for a narcotic. Pharmacists can flag police if they suspect a doctor or clinic is dispensing an unusually large amount of painkillers. Police can use the records to bolster their cases against "pill mills" that dispense massive quantities of pain pills with little or no examination of patients.
In August, Kentucky and Ohio became the first states to link their databases to make it tougher for addicts in one of the states to avoid detection by visiting a doctor in the other. Those states joined with West Virginia and Tennessee in an interstate alliance to coordinate databases, laws and investigations to try to keep pill mills shut down in one state from popping up across the border.
"Kentucky and Ohio have already broken the code," says Bruce Grant, former executive director of the Governor's Office of Drug Control Policy in Florida.http://www.usatoday.com/news/nation/story/2011-10-13/pill-mill-drug-trafficking/50896242/1