Information exchange is crucial to research advancement. Data availability and accessibility often constitutes a major entry barrier for researchers who are interested in health-related issues. This paper aims to offer a comparative analysis of three databanks in Taiwan, the NHRI National Health Insurance Database, the DGBAS household survey of family income and expenditures, and the DOH survey on facilities and service volumes of medical institutions. A comparative analysis is performed on these databanks with an emphasis on their unique characteristics to advance the audience's understanding of the nature of the databanks, including data inconsistency. It is hoped that this paper can contribute to the circulation of information and entice more research endeavors into the field of healthcare industry.