Actually the D.E.A. is directly involved in all prescriptions and prescriber activities. https://en.wikipedia.org/wiki/Drug_Enforcement_Administration#Registra

Actually the D.E.A. is directly involved in all prescriptions and prescriber activities. https://en.wikipedia.org/wiki/Drug_Enforcement_Administration#Registration_and_licensing https://en.wikipedia.org/wiki/Drug_Enforcement_Administratio... Every US prescriber such as a physician or NP must be registered with the DEA and obtain a registration number. This number is provided on all their prescription pads, and it's a number required by the [also DEA-registered] pharmacy to authenticate all prescription requests, controlled substance or not.