The Google-Ascension venture may shine a light on the misunderstood issue of data sharing in the healthcare industry. People underestimate how many companies have access to medical data. Healthcare providers have to share this data with a large number of companies on a day-to-day basis to provide a person with care. When you go to a hospital or medical practice and you sign all those forms, you are signing away permission to share your data with a wide range of companies. The news isn't that Google is doing this. It's just how much of this data is being shared today.