Some health care providers can actually get the data directly from Apple. (Or maybe their app pushes the data from your phone, not sure how it works). You can choose which data to share.
I have mine set up that way, but I couldn't tell you now how to do it. The app/website are such garbage that I never used it again after an initial go at it. It's possible your provider/group has this or similar system, ask her doctor's office. (Well, hopefully not a "similar system", but instead one that is not total garbage...)
https://itunes.apple.com/us/app/healow/id595012291?mt=8
I'll ask my doctor when I have my annual checkup if they are actually getting any data or looking at it.
"access up to date medical records" sounds attractive. But that's only if your doctor's office/group is set up to do that. Mine isn't. So, it's still begging for paper copies.