The Virtual Nursing (VN) in Aged Care project, funded by the Department of Health, Disability and Ageing, aims to enhance quality of care for residents in residential aged care homes (RACHs) through 24/7 specialist clinical support for onsite registered nurses. This study, conducted by the La Trobe University project team, evaluated the effectiveness of VN in reducing days of hospitalisation between January 2024 and December 2025 in the first five homes recruited to the project. Interrupted time series analysis (ITSA) was used to estimate the impact of VN on hospitalisation days in five participating homes (VN group), with a six-month post-intervention observation period commencing in July 2025. Five comparable RACHs of similar size and located within the same Modified Monash Model (MMM) area classifications, but without VN implementation, were included as controls. Prior to July 2025, the VN group showed a steady increase in hospitalisation days; this upward trend plateaued following VN implementation. In contrast, the control group continued to show the same trend both before and after July 2025. Compared with the pre-intervention period, average hospitalisation days increased by 30.8% in the control group, while the increase in the VN group was substantially lower at 13.5%. These findings provide quasi-experimental evidence that VN can stabilise rising hospital utilisation in aged care. The results support scaling VN nationally as part of a suite of strategies to reduce avoidable hospitalisations. VN also aligns with aged care reform priorities, strengthening clinical decision-making and supporting more appropriate, resident-centred care through timely specialist input.