Final answer:
Physicians in North Carolina need to have a valid DEA registration and comply with state and federal regulations when ordering Schedule II, III, and IV controlled substances.
Step-by-step explanation:
In North Carolina, physicians must follow specific procedures when ordering Schedule II, III, and IV controlled substances for office use. They need to have a valid DEA registration, maintain accurate records, and comply with state and federal regulations. Physicians must also ensure that they only order the necessary quantity of controlled substances for their practice.