Availity

Availity is a major clearinghouse used by over two million healthcare professionals, offering free basic claim submission and, notably, free real-time eligibility verification (270/271) - the single best denial-prevention tool, since eligibility issues are the number one denial reason. It connects to a very wide payer network and offers paid tiers for stronger scrubbing and analytics. The free claim scrubbing catches formatting and obvious coding errors but won't predict denials like premium AI tools. A solid, low-cost backbone for therapy practices that bill insurance. HIPAA-compliant.