The Role of Telehealth in Decreasing Barriers in Accessing Primary and Specialized Care Services in U.S. Rural and Underserved Communities: A Scoping Review.

BACKGROUND: Telehealth has emerged as a promising strategy to mitigate access barriers, particularly following rapid expansion during the COVID-19 pandemic; however, evidence on its role across care settings and populations remains fragmented. This scoping review synthesizes United States (U.S.)-based evidence on the role of telehealth in improving access to primary and specialized medical care for underserved, rural, and hard-to-reach adult populations. METHODS: Guided by the Arksey and O'Malley framework and PRISMA-ScR guidelines, peer-reviewed studies were identified through PubMed, Embase, and the Cochrane Library. Eligible studies examined telehealth use in adult U.S. populations and reported outcomes related to health care access, social determinants of health (SDoH), or implementation strategies. Data were charted and synthesized narratively, with implementation approaches categorized using the ERIC framework. RESULTS: Of 9,212 records identified, 242 studies met inclusion criteria. Telehealth was associated with comparable or improved access and clinical outcomes across primary care, specialty care, behavioral health, palliative care, and perioperative settings. Commonly addressed SDoH and demographic characteristics included age, race/ethnicity, socioeconomic status, insurance coverage, geography, and digital access. While telehealth reduced barriers related to transportation, travel burden, and scheduling flexibility, disparities persisted for older adults, individuals with limited English proficiency, and those with low digital literacy or broadband access. Implementation strategies most frequently involved adapting interventions to local context, iterative evaluation, and clinician support, whereas financial and infrastructure-level strategies were less commonly reported. CONCLUSIONS: Extant literature suggests that telehealth has broad and firm support for its role in reducing access barriers and improving health outcomes across a wide range of conditions and populations. Therefore, future community-based approaches should focus on integrating telehealth into existing care delivery systems, tailoring interventions to the needs and preferences of different populations, and addressing structural barriers such as digital access, health literacy, and reimbursement to ensure sustained implementation.