Healthcare organizations collect and analyze large amounts of data in order to measure the performance of affiliated healthcare providers, and thus, to track the quality of healthcare being delivered to patients. Collecting and analyzing data in order to track healthcare quality are difficult for a healthcare organization, particularly for a large organization having many providers. For example, a healthcare organization can include several hospitals. Within each hospital, patients visit a number of different doctors, or providers. Moreover, the patients visit multiple hospitals. Additionally, different providers or hospitals collect and store data in different formats. Thus, large amounts of healthcare data can be diverse and scattered across many different systems throughout the healthcare organization. US20140032240 illustrates the big data analytics system for measuring healthcare quality effectively and efficiently from large amounts of heterogeneous healthcare data.