Collections agencies need to provide you with an itemized list of what you owe and to who.
If a hospital gives out this information, especially if they didn’t even try to collect it themselves, they have violated HIPPA.
Will a collections agency give you a document proving they vioated HIPPA? No. Do you owe debts on something w/o receipts? No.
Collecting on a debt is not a HIPAA violation. When I worked for a 3rd party debt buyer we went through the same HIPAA training that I go through working in the medical industry now. HIPAA does not prevent collection of a valid debt and the passing of whatever information is necessary to do so.
ETA getting it thrown out in court is FAR different than calling it a HIPAA violation.