We aggregate from 80+ verified government and hospital sources. Every price on Taven traces back to publicly available, government-mandated data.
Real-time payer rate density across the United States — 351M+ negotiated rates across 13 priority markets
Our data comes from three primary categories of publicly mandated sources:
Under the CMS Hospital Price Transparency Rule, every US hospital must publish machine-readable files (MRFs) containing their standard charges, negotiated rates, and cash prices. Starting April 1, 2026, the updated CMS v3.0 schema requires hospitals to include actual allowed amount statistics (median, 10th and 90th percentiles) calculated from insurer remittance (ERA) data, organizational Type 2 NPIs, and a senior official attestation of data accuracy. We aggregate these files directly from hospital websites and track v3.0 compliance across all hospitals.
The Transparency in Coverage Rule requires health insurers to publish in-network negotiated rates and out-of-network allowed amounts. We aggregate 2.6M+ payer rate records from 13 major insurers including Aetna, Anthem, UnitedHealthcare, Cigna, BCBS plans, Humana, Kaiser Permanente, and regional carriers. These files provide the insurer's perspective on pricing, enabling cross-validation against hospital-reported rates.
We supplement hospital and payer files with publicly available datasets from CMS and other government agencies, including Medicare payment data, hospital cost reports, provider enrollment records, and geographic cost indices.
Starting April 1, 2026, CMS requires all US hospitals to publish their machine-readable files (MRFs) using the updated v3.0 schema under the CY 2026 OPPS/ASC Final Rule (CMS-1834-FC). This is the most significant update to hospital price transparency since the original rule took effect.
When a negotiated rate is expressed as a percentage of billed charges or an algorithm (not a fixed dollar amount), hospitals must now include actual allowed amount statistics calculated from Electronic Remittance Advice (ERA/835) data: the median, 10th percentile, and 90th percentile of insurer payments, along with the count of claims used. This replaces the less reliable estimated_allowed_amount from v2.0 and gives consumers real payment data.
Hospitals must include their organizational Type 2 NPI(s) associated with hospital taxonomy codes (27x, 28x). This ensures each MRF is accurately linked to the correct hospital entity, improving data quality across the ecosystem.
Each MRF must include a signed attestation from the hospital's CEO, president, or equivalent senior official confirming the accuracy of the published data. Taven Health displays attestation details on each hospital's page when available.
Taven Health processes, validates, and monitors v3.0 compliance across all 4,756 hospitals in our database. We track which hospitals have migrated to v3.0, verify the completeness of their allowed amount statistics, and flag compliance gaps. View our CMS v3.0 Compliance Dashboard for real-time status.
Not all hospitals comply equally with price transparency requirements. We actively monitor for data freshness, completeness, outliers, and cross-source consistency. Data that doesn't meet our quality standards is excluded or flagged.
Learn more about how we process and validate this data on our Methodology page.
Our complete data source catalog — including individual source names, trust tiers, update frequencies, and coverage maps — is available to verified partners.
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