https://www.vox.com/technology/369302/amazon-one-medical-pharmacy-prescription-drugs
I ordered groceries from Amazon Fresh. Now I’m getting prescription drug recommendations.
When I switched to Amazon pharmacy all I had to do was give them my name and birthday they were instantly able to find my insurance provider all of my active meds at my current pharmacy and order refill and switch pharmacy to Amazon all within 5 or 6 clicks. You can assume they already had this info from one way or another and the me clicking permissions was theater
To be fair though, that's pretty much any pharmacy system. I just switched my main pharmacy over last year, and it's basically the same process.