Ordering, Prescribing, Rendering or Referring Provider (OPR) FAQs

This page provides answers to Frequently Asked Questions (FAQs) regarding:
Federal Regulation 42 CFR 455.410 - Attending, Rendering, Ordering, Prescribing or Referring Providers, and Federal Regulation and 42 CFR 455.440 - National Provider Identifier

Updated Jan. 17, 2025