I have 15 years in multiple levels of health care. Believe me when I say that if the government wants your data they WILL have it. They have all the power over the rest of the players inside health care, both officially and unoficially. Picture what happened on the censorship level with Twitter and Facebook over the past decade and apply the same methods to ALL health care companies, constantely, over the past 30-40 years. 

If you trully think government doesn't have the power, you are the one being naive about this. 

But yes, obviously all juridictions are different and get your data in different ways. I know particularly well the US, canadian, european, indian, chinese and brazilian system. Other than that, all dictators out there have full access to your data. Indian, Chinese and brazilian systems do have your complete health record with the government. Europeans and Canadians also have large chuncks of their health information with the government. US is per state. Some states have a lot, some states have little info. But all states have SOME info. The Federal information usually comes from the insurance companies when you use them. 

Anyway, if you trully think the status quo is good and you want to support the government surveillence that exists TODAY you can keep using it. 

All we are doing is to create a balance of power, where patients can decide where to store their data, which clients they cant to use to access and manage that data, and which keys they want to encrypt that data with.