API-first / developer-oriented
Built around programmatic access rather than a portal. Stedi, API-first healthcare clearinghouse exposing eligibility, claims, claim status, acknowledgments, and remittance retrieval over a modern JSON API while also supporting raw X12. Publishes a searchable payer network and public metered pricing. Fits groups with engineering capacity, multi-entity complexity, or a plan to build their own analytics. See the comparison for the tradeoffs. Change Healthcare / Optum APIs, the incumbent’s API surface, available but legacy-shaped. Note also that several healthcare API infrastructure companies sit adjacent to this category, offering eligibility, claims, or payments primitives that route through underlying clearinghouses. Understand what is being resold versus what is a direct connection before selecting one.Large national
Optum (Change Healthcare), one of the largest by volume; UnitedHealth Group subsidiary. See the comparison including the February 2024 outage. Availity, payer-founded lineage; doubles as the provider portal for many payers. Free tier for some payer-direct functions. Waystar, publicly traded revenue cycle platform with clearinghouse at its core; extensive adjacent RCM tooling. TriZetto Provider Solutions, part of Cognizant. Broad connectivity, commonly embedded in practice management systems, with RCM services alongside. Inovalon, clearinghouse and data analytics, incorporating the former Ability Network. Strong in post-acute and analytics-oriented segments.Small practice and value-oriented
Office Ally, long-established, widely used by small practices, with a free tier for claim submission to participating payers. Portal-first; the economics are the draw. Claim.MD, small-to-mid practice focus, generally well regarded for support responsiveness and straightforward pricing. Apex EDI, small practice focus across medical, dental, and vision. eProvider Solutions, clearinghouse services with a small-practice orientation.Dental-specific
Dental requires 837D and CDT support, and dental payer connectivity is a partly separate network. DentalXChange, dental-focused clearinghouse with broad dental payer connectivity and integrations into major dental practice management systems. Vyne Dental (Tesia), dental claims and attachments; strong in the attachment workflow that dental claims frequently require. Skygen / Dental clearinghouse arms of larger platforms, several dental payers and administrators operate or partner with dedicated dental clearing services.🦷 Dental attachments are a distinct workflow. Dental claims frequently require radiographs, periodontal charting, or narratives, and the attachment mechanism is not uniform across payers. Evaluate dental clearinghouses on attachment handling specifically, not just claim transmission. See Dental: the DSO model.
Vision
Vision plans (VSP, EyeMed, and others) frequently operate their own submission channels separate from medical clearinghouses. An optometry practice typically needs medical clearinghouse connectivity plus direct vision plan channels. See Optometry and vision.Institutional and facility
Groups operating an ambulatory surgery center or facility component need 837I support in addition to 837P. Most large national clearinghouses handle it; verify with smaller and specialty vendors.Embedded in EHRs
Many practices use a clearinghouse they never selected, because it ships with the EHR. Common patterns:
Ask before you sign the EHR contract: does this system permit me to use my own clearinghouse, and can I change later? Get it in writing. See Choose an EHR/PM system.