In most jurisdictions injured workers can not be billed for medical treatment arising out of a workers compensation claim. I would seggest you speak with a workers compensation attorney in your jurisdiction to determine your rights regarding this issue. You may wish to speak with the governmental agency which oversees workers compensation in your state.
The answering of this question does not constitute a attorney-client relationship. Further by answering this question the attorney has not agreed to represent inquisitor.
You may have difficulty finding a third attorney on a denied case. It may be more productive to contact the FL WC Ombudsman for assistance with your medical bills.
I represent Employers, but I can recommend Worker Attorneys in So Cal if you ask.