The question to be explored in this article is to what extent and under what conditions the supply chain and process concepts are applicable in healthcare service production. First, we examine various units of analysis and propose a way to account for patient provider interactions. Second, we analyze a case from an otorhinolaryngology department and illustrate a situation where a process approach is appropriate. Third, a case from a nefrology division illustrates a situation where a process approach is of limited use calling for a reexamination of appropriate units of analysis. Finally we discuss implications and possibilities for further research.