Maintain incoming patient calls and respond to voicemails promptly. Assist billing staff with basic office duties. Manage patient billing emails and portal messages. Serve as a liaison between billing and operations for patient balance inquiries. Manage Self-Pay AR and accounts with credit cards on file. Collect patient payments and post payments. Review and send qualified accounts to collections. Identify patient and insurance credits/refunds. Create and manage patient payment plans. Manage and run weekly statement files. Handle return mail. Mail secondary claims to insurance companies. Mail collection letters. Maintain strict confidentiality and comply with company policies. Stay abreast of and comply with state and federal laws including HIPAA, ADA, OSHA, and FLSA.