Third Party Evaluation Services (TPES) is a resource for medical practices giving uncompensated care in traumatic injury cases where third party negligence is at fault. TPES combines a legal agreement between physician and patient with accident investigation and legal action to obtain subrogation for medical practices.

Through the medical reimbursement process, TPES also aims to relieve associated patients of care-related costs by facilitating a payment agreement with their medical provider.

In this approach, TPES offers a win-win scenario for practitioner and patient, giving the hospital an alternative to collections processes which sometimes become futile when dealing with patients who can't pay. Instead, the hospital can proactively assist patients with paying off their medical debt.