Works independently to provide the following three functions: patient service, insurance authorizations and referrals, and assisting patients with their accounts. Greets and registers patients, and collects demographic and insurance information. Maintains, confirms, and secures referrals, authorizations, or pre-certifications needed on physician/clinic services. Maintains the payer authorization database. Responds to patient / guarantor billing inquiries and arranges for payment of current and outstanding balances.