How does RevenueWell know how many new patients we've had in the past 30 days?

The "Quick Stats" box in the Patients tab shows this figure.

When you create a new patient account in your practice management system, RevenueWell will import that patient’s account into RevenueWell via the data sync on your server. Patients whose accounts have been created within the past 30 calendar days are included in this list.