Transcranial Magnetic Stimulation (rTMS) as a Tool to Decrease Pain and Improve Functioning

Inclusion Criteria: * Participants must be able to provide informed consent and function at an intellectual level sufficient to allow accurate completion of all assessment instruments. * Participants must meet moderate to severe DSM-5 criteria for OUD. While individuals may also meet criteria for use disorders of other substances (with the exception of alcohol or benzodiazepines), they must identify opioids as their primary substance of abuse. * Participants must report chronic pain for at least the past three months and have a Brief Pain Inventory score. * Participants must be receiving treatment through the STAR program. Exclusion Criteria: * Participants who are pregnant. * Participants with a history of/or current psychotic disorder. * Participants with a history of dementia or other cognitive impairment. * Participants with active suicidal ideation, or a suicide attempt within the past 90 days will be excluded. * Participants with contraindications to receiving rTMS (including a history of seizures, or any implanted metal above the neck). * Those with unstable general medical conditions. * Those who are currently using naltrexone or tramadol. * Those with current alcohol or benzodiazepine use disorders due to increased risk of seizure.