I don't know then, gross negligence? ianal, but why is this an acceptable and profitable way to operate is beyond me.

Errors on a medical chart by themselves wouldn't legally constitute gross negligence (or even regular negligence). But if there was some sort of preventable patient harm then such errors could be evidence for establishing malpractice liability and/or professional sanctions.

In general patients should always check their own chart notes for errors. Most providers now make those available online for free through a secure patient portal.