My Mother Won't Respect My Medical Privacy

I’m tired of my mother coming to all my medical appointments. Even if I don’t tell her about them, she finds out and invites herself. She’s part of that portal app thingy, so the app tells her every time I have an appointment. If I want her advice, I’ll tell her what the doctor said and ask for her advice. But otherwise I wish she’d just keep her mouth shut and let me handle my own private health matters.