Dissertation (MSc Computer Science)This study has intended to design a model for an Integrated Hospital Information System in Tanzania, and was conducted at four hospitals from Dodoma and Manyara regions respectively. A sample of 90 respondents participated in the study from a purposive and non-purposive sampling. A Statistical Package for Social Science (SPSS) was used to analyze the quantitative data. Findings have revealed that Integrated Hospital Information System (iHIS) in Tanzania requires infrastructure, system development, data sharing and interoperability and unique identification as well as information security and privacy. Strong security measures must be observed before integration, during integration and after integration of HIS system. The study not only should design an architectural model for iHIS but also the design has considered the fact that, most patients’ records which were captured by the HIS deployed in various hospitals in Tanzania did not have either common unique identities or biometric data, which could be used to identify a patient’s record throughout the country. An integrated hospital information system which could enable sharing of patients’ information between the hospitals is an important tool for healthcare providers to provide continuous treatment to patients, understand the background of the disease, understand how the patient was diagnosed and knows the treatment the patient is on. This study also, recommends the following to be the principle for achieving the iHIS. The systems should be as flexibility as possible in order to allow further growth and its expansion; interface engine must be constituted with technologies that suit for integration such as XML, JSON and REST as well as a patient having a unique identification number which can be used in all integrated systems