PurposeThe purpose of this paper is to understand whether and how the Environmental, Social and Governance (ESG) paradigm can be useful in social reporting in the context of nonprofit healthcare organizations. In other words, the study deals with non-financial reporting and information, allowing external stakeholders to comprehensively evaluate the organization’s performance and behavior, investigating internal stakeholder perception over ESG paradigm application.Design/methodology/approachThe authors used a case study approach investigating four cases among nonprofit healthcare organizations in Italy. Analyses of available primary sources have been conducted, followed by semi-structured interviews. Interviews were then transcribed and coded in a joint blinded process by all authors. More specifically, three areas have been investigated: (1) factors motivating the development of non-financial disclosure practices; (2) the rationale behind the organization’s decision to include specific topics; and (3) the future perspective on the future of non-financial disclosure within the specific sector.FindingsESG may serve as a suitable framework to create comparable documents that can act as benchmarks for similar institutions. However, while nonprofit organizations (NPOs) can draw inspiration from ESG, the utility of these criteria should be thoughtfully tailored to align with the organization’s mission. The ESG using as a general guide, instead of implementing it as a real tool to assess performances, emerges as a positive practice. NPOs should not focus on fulfilling ESG requirements bur rather take inspiration from them. Otherwise, the risk is an excess of focus on the formal aspect rather than on its content.Originality/valueThe study contributes to a better understanding of social and ESG’ reporting activities and approaches in the healthcare sector by describing some case studies and the effect of sustainability in the social reporting of nonprofit healthcare organizations.