Earlier this year a large medical center got hit with ransomware and shut down every network system it had. Clinics across the state closed. Outpatient surgeries and imaging appointments were canceled. By their own account, it took nine days to get back to normal.
The part worth sitting with: they didn't pull the plug on everything because everything was infected. They pulled it because they couldn't prove what wasn't.
That's what one flat network costs you. In a lot of practices, the same network carries the front desk PCs, the practice management server, the imaging equipment running software nobody dares touch, the guest Wi-Fi in the waiting room, and the thermostat. Everything can reach everything. So when something goes wrong there's no small answer available, only the big one.
Segmentation is just interior walls. Fire doors. The fire still starts, it just doesn't take the whole building. Equipment in its own lane with no path out to the internet. Guest Wi-Fi that touches nothing clinical. Admin tools reachable from a short list of machines.
For a ten-provider practice, a week down isn't an IT problem. It's appointments you can't bill, charts to re-enter by hand, and staff you're paying to apologize on the phone.
Ask whoever runs your network to draw you the map. If it's one box with everything plugged into it, that's your answer.
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