rTMS for Stimulant Use Disorders

Inclusion Criteria: * 18-65, inclusive * Have a diagnosis of moderate or severe Cocaine or Methamphetamine Use Disorder (CUD/MUD) over the past 12 months (as determined by DSM-5 diagnostic criteria). * Have used cocaine or methamphetamine on at least 10 of the last 30 days (based on Timeline Follow-Back). * Be interested in decreasing cocaine and/or methamphetamine use. * If female, willing to use appropriate birth control method during the treatment phase of the study. * Be able to understand the study procedures and provide written informed consent to participate in the study. * If prescribed benzodiazepines or anticonvulsants, must be on a stable dose for at least 4 weeks prior to consent. Exclusion Criteria: * A Diagnostic and Statistical Manual (DSM-5) diagnosis of moderate or severe SUD of any substance other than cocaine or methamphetamine based on DSM-5. * History of a serious medical disorder that, in the opinion of the Medical Clinician, would make it unsafe to participate in the study or may prevent collection of study data. * Is currently engaged in formal SUD treatment. * Documented history of unprovoked seizure (lifetime) or any seizure in the past 6 months. * Documented history of brain lesion(s) and/or tumor(s). * Metal implants or non-removable metal objects above the waist. * Currently pregnant. * Lifetime history of prior clinical treatment with TMS. * Current or lifetime bipolar disorder. * Current psychotic disorder or psychotic depression. * Serious r…