Which group is not required to register with the Department of Health/DEA for managing controlled drugs?

The correct choice highlights that common carrier employees do not need to register with the Department of Health or the DEA for managing controlled substances. Common carrier employees, such as those working for shipping and delivery services, primarily function in transporting goods rather than handling or distributing medications. Their role is not typically involved in the prescribing or dispensing of controlled substances, which is why they are not subject to the same regulatory requirements.

On the other hand, pharmacists, medical practitioners, and patients are involved in the management of controlled drugs in various ways. Pharmacists must be registered to dispense medications, medical practitioners who prescribe controlled substances need to be registered to do so legally, and while patients may not need to register themselves, they are the recipients of controlled substances that have been prescribed or dispensed by registered professionals. Thus, the necessity for registration is a key distinction between these roles and that of common carrier employees.