Introduction: One of the challenges of multidisciplinary disciplines such as Medical Informatics, is the lack of familiarity with research fields. Due to the specializations and clinical facilities concentrated in each university, research is being done differently and with variety. Therefore, in this study, in order to identify the most researched fields and the neglected fields of research, the dissertations done in the field of medical informatics in Iranian universities were studied based on the health informatics framework.Material and Methods: Defended dissertations available to master and doctoral students of medical informatics during ۲۰۱۱ to ۲۰۱۹ in the universities of Tehran, Iran, Tarbiat Modares, Shahid Beheshti, Shiraz, Tabriz and Mashhad were collected. Three medical informatics experts assigned dissertation titles to a competency and an area of skill based on health informatics competencies framework. The second stage of the study was performed by two other experts (different from the previous three experts). Each dissertation title was assigned to a specific competency and a specific area of skill by the majority opinion method.Results: The results showed that the most of master and doctoral dissertations were in the field of information science and methods, in which area of skill of data analysis and visualization, which decision support systems and informatics for participatory health were more than others. Among PhD students, the area of skill of decision support system and architecture of health information systems were more popular. PhD students at the universities of Mashhad, Tehran and Shahid Beheshti worked in the field of methods and basic principles of activities more than other areas, information and communication technology, biomedical science and health were not considered.Conclusion: Results of this research could be helpful for field researchers in terms of conducting new research in the field and can help to design useful, scientific and effective research projects.