Nowadays, there is a huge demand for personalized health services. The evolution of cognitive systems technology combined with the hot trend of the mobile apps market became an important driver for personalization in the health field. One of the challenges concerns providing credible information about health issues tailored to each end-user. In this direction, this paper aims to present a cognitive services model in order to support the building of cognitive-based collaborative networks to provide tailored health information through appropriate interfaces. The discussion regarding the integration of the services is based on the experience acquired with the implementation of the OnParkinson mobile app, which is a case study integrating the IBM Watson cognitive services.