Firstly it's your data so the better question is really why don't I have a web page with my medical records encrypted on them and key sign my local doctors when he wants to update them
This is a much much better way round, but two things hold it back - well three.
1. Key sign? PKi? Wtf?
2. Doctors actually don't want many records to be available to the patient - it frankly compromises medical care (heard the phrase GOMER - Get Out Of My ER. Much diagnosis is still hunch and guesswork - and needs to be carefully phrased If patient will read it
3. We still think something centralised should track all our medical care when really something decentralised is much much better
This is a much much better way round, but two things hold it back - well three.
1. Key sign? PKi? Wtf?
2. Doctors actually don't want many records to be available to the patient - it frankly compromises medical care (heard the phrase GOMER - Get Out Of My ER. Much diagnosis is still hunch and guesswork - and needs to be carefully phrased If patient will read it
3. We still think something centralised should track all our medical care when really something decentralised is much much better