(a) Every person who manufactures, distributes, or dispenses any controlled substance or who purposes to engage in the manufacture, distribution, or dispensing of any controlled substance, shall obtain annually a registration issued by the Commissioner in accordance with the rules and regulations promulgated by him.
(b) Persons registered by the Commissioner under this chapter to manufacture, distribute, or dispense controlled substances are authorized to possess, manufacture, distribute, or dispense such substances (including any such activity in the conduct of research) to the extent authorized by their registration and in conformity with the other provisions of this chapter.
(c) The following persons shall not be required to register and may lawfully possess any controlled substance under this chapter:
(1) An agent or employee of any registered manufacturer, distributor, or dispenser of any controlled substance if such agent or employee is acting in the usual course of his business or employment.
(2) A common or contract carrier or warehouseman, or an employee thereof, whose possession of the controlled substance is in the usual course of his business or employment.
(3) An ultimate user who possesses such substance for a purpose specified in section 593(30).
(d) The Commissioner may, by regulation, waive the requirement for registration of certain manufacturers, distributors, or dispensers if he finds it consistent with the public health and safety.
(e) A separate registration shall be required at each principal place of business or professional practice where the applicant manufactures, distributes, or dispenses controlled substances.
(f) The Commissioner is authorized to inspect the establishment of a registrant or applicant for registration in accordance with the rules and regulations promulgated by him.