PURPOSE: As the utilization of oral cancer medications rises, it is vital that cancer centers track costs associated with these expensive medications. This research seeks to report the cost interventions associated with medically integrated pharmacies (MIPs) and mail-order pharmacies. METHODS: Data collection occurred from October 2016 through May 2021. Volunteers input data from their oncology practice into NCODA's Cost Avoidance and Waste Tracker tool, an innovative easy-to use tool that allows practices to document any cost saving interventions or waste occurrences. RESULTS: The Cost Avoidance and Waste Tracker tool was used by nearly 50 MIPs across the country. Specifically, 26 practices submitted cost avoidance data, and 37 practices tracked waste associated with oral oncolytic therapy. Among the 26 practices, 677 cost avoidance events led to a total cost avoidance of $7,057,053.73 US dollars (USD). The net cost avoidance for the MIP's was $6,510,971.28 USD compared with $546,082.45 USD for the external mail-order pharmacies. Among the 37 practices that reported waste, 768 events were reported, leading to a total drug waste of $11,275,642.16 USD. Of that, $8,935,612.15 USD was attributed waste from external mail-order pharmacies, whereas $2,429,592.01 USD worth of drug waste was reported from MIPs. CONCLUSION: Medically integrated dispensing of oral oncolytic therapies allows for increased pharmacy oversight, leading to increased cost avoidance and reduced waste for patients and third-party payers. Although these data are difficult to compare because of the complexity of workflows at different dispensing sites, the real-world financial differences between medically integrated dispensing and mail-order pharmacies appear to be significant.