Purpose: To identify targets for corrective interventions and guide improved opioid stewardship, we studied opioid prescribing patterns of attending surgeons compared with surgical trainees for 2 upperextremity surgeries: open reduction internal fixation (ORIF) of distal radius fractures (DRF), and carpal tunnel release (CTR). Methods: We retrospectively reviewed records for all patients who underwent CTR or DRF ORIF at 6 hospitals across a large health system from 2016 to 2018. We collected prescriber training level (attending vs trainee), analgesic prescribed, and amount initially prescribed after surgery converted to oral morphine equivalents (OMEs). Regression models evaluated OMEs by prescriber and surgery type. Our final models included an interaction term between prescriber training level and year of surgery to assess group changes over time. No prescription guidelines or formal training was provided during the study period. Results: We included 707 CTR and 383 DRF ORIF patients. Opioids prescribed by trainees ranged from 90 to 300 OMEs (median, 180 OMEs). Opioids prescribed by attendings ranged from 100 to 225 OMEs (median, 150 OMEs). Early in the analyses, trainees prescribed significantly more than attendings (320 versus 180). Over time, trainees reduced overprescribing significantly more, by an additional 40 OME/y. By the end of the analysis period, trainees were prescribing less OME than were attendings (112.5 vs 150). Both groups continued to prescribe more than recently suggested amounts for both procedures. Conclusions: Our study found that both attendings and trainees overprescribed opioids after surgery. Trainees prescribed more than attendings over the study period; however, when analyzing for improvement over time and with no formal intervention or training, trainees showed greater improvement, eventually dropping to levels at or below that of attendings. Considering that most change was seen at the trainee level, education for established providers may be an area in which more improvement can be made. Clinical relevance: Understanding which providers are more likely to overprescribe opioids can help guide interventions that improve opioid stewardship.