Very well stated.
This is a huge problem that we are not doing anything to address. And like you said it’s been going on for a long time. Obamacare didn’t start it but my guess it’s not going to stop it either. If anything it makes the system even more complex and complexity invited corruption and fraud.
The system is not corrupt. You just do not understand it, and then infer that the people involved have evil intent.
Your example of your mother in rehab- that physician peering in was most likely managing her medical problems while she was there, ordering her meds, etc.
Upon discharge from the hospital, you stated there was no medical records available. A hospital is required to have a discharge summary. Your physician just needed to call the hospital, and get it faxed to them.