The healthcare sector faces significant challenges in adopting big data analytics, primarily due to the complex interplay of various socio-technical factors that influence successful implementation. While prior research has identified numerous factors affecting big data analytics adoption, there is limited understanding of their relative importance in the healthcare context. This study aims to identify and prioritise the critical socio-technical factors influencing big data analytics adoption in healthcare through expert consensus. A four-round Delphi study was conducted with ten experts representing diverse stakeholders including academics, data scientists, healthcare practitioners, and top management. The study employed a comprehensive framework encompassing person, technology, organisation, environment, and task dimensions. The results revealed that analytical skills, knowledge, and experience were the most critical person-related factors. In the technology dimension, system reliability, and data quality emerged as top priorities, while organisational support, funding, and infrastructure were identified as crucial organisational factors. The study also highlighted technological advancement and government regulations as key environmental factors, with task reliability emerging as the most significant task-related factor. The study offers a comprehensive understanding of the relative importance of various social-technical factors, thereby enabling more focused and effective big data analytics adoption strategies in healthcare settings.