I just send an invoice for medical records to them like I would to a lawyer or any other 3rd party. Here in MO we are allowed by the state to charge $0.47 per page + $20.02 handling + postage + notary fee if required. (State mandated fees are for things related to state government related requests for records, but I charge the same to everyone - makes it easier for staff). They always pay before I send the records. A month or 2 ago had a chart that cost the insurance Co about $75 to get and they paid no problem.
