A Practice Note addressing the good faith estimate requirements and the patient-provider dispute resolution process required for providers (including physicians and billing practitioners) and facilities (including hospitals, freestanding emergency departments, and urgent care centers) under the No Surprises Act (part of the Consolidated Appropriations Act, 2021 (CAA-21)). This resource reflects interim final regulations (IFRs), issued in July and October 2021, to implement the No Surprises Act's prohibitions on surprise medical bills and balance billing, as well as price transparency and patient protection requirements.