Which information is NOT required on controlled substance invoices?

The prescriber's license number is not required on controlled substance invoices because such invoices typically pertain to the wholesale distribution of controlled substances rather than the prescription process itself. Controlled substance invoices primarily function as documentation for the transfer of ownership between entities, such as wholesalers and pharmacies.

Key required elements of these invoices typically include the quantity of the drug, the date of sale, and the DEA registration number of the seller. The quantity ensures accurate record-keeping of controlled substances received, while the date of sale assists with tracking and compliance. The DEA registration number proves that the seller is authorized to distribute controlled substances. In contrast, the prescriber's license number is relevant in the context of prescriptions and patient-specific orders, not in the wholesale distribution chain documented by invoices.