Understanding the data behind HospRates
HospRates uses CMS Hospital Price Transparency machine-readable files (MRF) published by hospitals as mandated by federal regulations. These files contain negotiated rates between hospitals and insurance payers for medical procedures and services.
Official Source: Centers for Medicare & Medicaid Services (CMS) Hospital Price Transparency Rule
Learn more at CMS.gov →Currently, HospRates covers 3 hospitals in the Buffalo, NY area:
Total dataset: 17,921,525 price records across all hospitals
HospRates supports three standardized medical billing code types:
Important Notes:
The dataset includes pricing information from 80 distinct insurance payers and 231 insurance plans, covering commercial insurers, Medicare Advantage, Medicaid managed care, and other payer types.
Last Updated: January 2026
Hospital price transparency files are typically updated annually or semi-annually. We monitor hospital websites for new file releases and update our dataset accordingly.
For questions about our data sources or methodology, contact us at: sohammane01@gmail.com