The biggest and toughest step toward recovery is the very first one: deciding to make a change. At Lexington Center For Opioid Dependence if you are struggling with addiction to heroin, or pain medications (prescribed or not) we are here to help you. All of our doctors are board certified by the American Board of Addiction Medicine. This means they have made the commitment to become experts in the field of addiction medicine and have passed rigorous testing by the Board examiners.