Patients who don't pay

What do you all do when payments don't pay? Speaking about those of you guys who do inpatient, and for example have Medicare A but patients don't have Medicare B/supplement so the physician portion of costs are not covered by insurance, patients sent a bill and they refuse to pay. How do you deal with this issue? Thanks!
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: PM&R Source Type: forums