Open data is the idea that certain data should be freely available to everyone to use and republish as they wish, without restrictions from copyright, patents or other mechanisms of control. It is important that the data are re-usable without requiring further permission, though the types of re-use such as the creation of derivative works may be controlled by a license. All industries can get a benefit from big, and one of them is healthcare sector. There is a huge number of data stored in healthcare sector which can be useful for many people and organizations. So, converting these data into open data will come with great benefits. It can help in detecting diseases at earlier stages when they can be treated more easily and effectively, managing specific individual and population health and detecting health care fraud more quickly and efficiently. Certain developments or outcomes may be predicted and estimated based on vast amounts of historical data, such as length of stay (LOS), patients who will choose elective surgery, patients who likely will not benefit from surgery, complications, and patients at risk for medical complications, illness/disease progression and possible co-morbid conditions. You can just imagine if you can access to all this huge data such benefits you will gain.