Overview. Shifts Available. Days. Employment Type. Full-time. Hours. 8-hour shifts. Location. Harlingen Central Billing Office – Harlingen, TX. Responsibilities. The Vendor Liaison is responsible to bill all insurance companies, workers' compensation carriers, as well as HMO/PPO carriers. Audits patient accounts to ensure procedures and charges are coded accurate and corrects billing errors. Able to identify stop loss claims, implants and missing...