“How are we going to be able to pull that off?”: staff perspectives on the early implementation of mobile medication units in New York State

BACKGROUND: Methadone is the gold standard treatment for opioid use disorder (OUD). In the U.S., methadone is usually only available through licensed opioid treatment programs (OTPs), but a 2021 federal rule provided an opportunity for OTPs to provide methadone on mobile medication units (MMUs). MMUs operate under the license of an OTP and are subject to complex regulatory requirements. New York State provided grant funding to support OTPs to adopt MMUs, aligned with the broader goal to improve methadone access statewide. This study explored barriers and facilitators to MMU implementation across New York State from the perspectives of treatment staff and administrators. METHODS: We conducted semi-structured interviews between June 2024 and June 2025 with 16 staff from four OTPs that adopted MMUs and one residential treatment program served by an MMU. Interviews were audio-recorded, transcribed, and analyzed using a hybrid deductive-inductive thematic analysis approach to identify implementation barriers and facilitators. RESULTS: Staff described a variety of potential models for using MMUs to expand access. In New York City, MMUs were used to serve a residential substance use program. In upstate NY, MMUs were deployed to reduce travel distance in counties with few OTP options. Key facilitators of MMU implementation included leadership persistence in the face of community pushback, creativity and workarounds in the face of logistical hurdles, and support from the state agency. Key barriers included community resistance to MMUs, unclear or inconsistent guidance from the Drug Enforcement Administration, and a variety of operational challenges, such as vehicle maintenance and workforce shortages. Staff generally were positive about the opportunity to use MMUs to address access challenges. CONCLUSIONS: MMUs provide a novel approach to expand methadone access, particularly to populations not currently served by brick-and-mortar OTPs. Early implementers can provide important lessons about how to manage start-up challenges, which can guide later adopters.