I just implemented it in a practice with probably around 35 staff members, 8 providers, 10 nurses, front desk, schedulers, etc.

It does work. One thing I see is that a lot of practices need to run custom reports and need to generate clinic quality reports. You will want to implement those before you start using the system. AC is pretty customizable with tracked data and custom health maintenance rules. Imported items. It's very versatile and some of the tracking features are often overlooked.