Helfrich, Christian DEnglish, Clayton2025-10-022025-10-022025English_washington_0250O_28827.pdfhttps://hdl.handle.net/1773/53878Thesis (Master's)--University of Washington, 2025Background: Use of long-acting injectable antipsychotics (LAIAs) for schizophrenia are associated with improved medication adherence and reduce relapse and hospitalizations compared to oral antipsychotics; however, despite these advantages LAIAs remain underutilized. Community pharmacies could improve access and reduce logistical barriers to LAIA administration; however, relatively few deliver this service, and we do not yet fully understand why. Objective: To assess the contextual fit of administering LAIAs in community pharmacies, identify determinants influencing implementation, and inform implementation strategies to optimize and increase LAIA delivery across Washington State. Methods: Key informant interviews were conducted with community pharmacy staff in Washington State using a hybrid deductive–inductive qualitative approach to explore determinants and compatibility of LAIA administration. Interviews were conducted using a semi-structured guide informed by Proctor's Implementation Outcomes Framework. Using rapid analysis, transcripts were summarized in a structured matrix and coded into a priori domains. Barriers and facilitators were inductively categorized and then deductively-mapped to the Consolidated Framework for Implementation Research (CFIR) domains; recommendations were identified to inform future implementation strategies. Results: Ten interviews were conducted with nine community pharmacists and one pharmacy technician. Current practices varied across participants administering LAIAs in community pharmacies. Reimbursement and payment for LAIA administration emerged as the top barrier. Appointment-based models were seen as facilitators by improving predictability for staffing and medication inventory. Participants recommended streamlining reimbursement and turnkey toolkits for training, care coordination, and communication between prescribers. Conclusion: For community pharmacies within Washington State, payment models and reimbursement present a critical barrier to LAIA administration. Optimizing billing processes, improving funding and contracting mechanisms, and engaging payers may expand LAIA services. These represent both outer-setting and inner-setting factors, meaning that optimizing LAIA administration in community pharmacies will require system-level, multi-stakeholder involvement and research.application/pdfen-USnoneAntipsychotic agentImplementation SciencePharmacyQualitative ResearchPublic healthHealth servicesThesis