Wearable technology in the form of smartwatches and advanced analytics are set to reshape healthcare by facilitating prevention, early diagnosis, personalized treatment, and management of chronic diseases. However, gaining insights from vast amounts of smartwatch data remains challenging for healthcare providers due to complex data formats and lack of training. To mitigate this shortcoming, healthcare professionals need tools that support them in analysing and presenting smartwatch data in an easy-to-understand way. Therefore, this study uses a design science approach to co-design, develop and evaluate an application prototype that analyses smartwatch data and allows healthcare providers to use this data to manage aspects of patients' health. The preliminary results of the co-design and development phases are reported. The meaningful involvement of healthcare providers in designing and evaluating such analytical tools would help develop relevant and useful health monitoring applications that can be scaled in real-world settings.