Senate watchdog targets high-prescribing Medicaid docs

An influential U.S. senator is grilling officials in nearly three-dozen states, demanding to know how they are cracking down on physicians who prescribe massive amounts of potentially dangerous prescription drugs. Iowa Republican Charles Grassley sent letters to 34 states Monday asking what steps they had taken to investigate doctors whose prescribing of antipsychotics, anti-anxiety drugs and painkillers to Medicaid patients far exceeds that of their peers.