In spite of the success of MOUD with buprenorphine, access to the medication continues to be a challenge for patients and their providers. This peer-reviewed study showed that 42.1% of the nearly 5,300 unique retail pharmacies contacted by Bicycle Health’s team on behalf of its patients did not report buprenorphine stock at the time of the request. Importantly, access to buprenorphine stock varied heavily depending on the state the patient resided in or type of pharmacy queried.