Background The opioid epidemic is a multifactorial issue, which includes pain mismanagement. A recent study has shown that residents have received little training for opioid related patient care. Therefore, resident physician education is essential in addressing this issue. We aimed to analyze the effects of an educational intervention on the knowledge and potential prescribing habits of emergency medicine, general surgery, and internal medicine residents. Methods Resident physicians were provided with educational materials and were given pre- and posttests to complete. Descriptive statistics were used to analyze pre- and posttest responses. Chi-squared analysis was used to identify changes between the pre and posttests. A p