Clinical decision-making involves an active interplay between various medical knowledge modalities — the spectrum of medical knowledge modalities spanning from tacit knowledge to experiential knowledge to explicit knowledge to data-induced knowledge. The ability to simultaneously access and then integrate multiple knowledge modalities pertaining to a common clinical theme is profound for clinical decision making. In this concept paper we introduce knowledge morphing — a knowledge modeling task that allows the integration of heterogeneous medical knowledge modalities, with respect to a clinical case, to yield a comprehensive knowledge resource for decision-support.