SPRINGFIELD — A new law signed by Gov. Bruce Rauner this week takes aim at the opioid crisis, requiring doctors to register with and check in on patient prescriptions in a state database.Senate Bill 772, which takes effect in January, is an effort to curtail “doctor-shopping,” visiting multiple physicians to amass numerous prescriptions for strong narcotics.But while it requires physicians to sign up for and document their attempts to check patient histories in the state’s Prescription Monitoring …