District of Columbia Code Division I. Government of District. § 3-1205.02. Exemptions.

(1) To an individual who administers treatment or provides advice in any case of emergency;

(2) To an individual employed in the District by the federal government, while he or she is acting in the official discharge of the duties of employment;

(2A) To an individual engaged in the practice of pharmaceutical detailing for less than 30 consecutive days per calendar year;

(3) To an individual, licensed, registered, or certified to practice a health occupation in a state, who is providing care to an individual, an animal, or group for a limited period of time, or who is called from a state in professional consultation by or on behalf of a specific patient, animal, or client to visit, examine, treat, or provide advice regarding the specific patient, animal, or client in the District, or to give a demonstration of a procedure or clinic in the District; provided, that the individual engages in the provision of care, consultation, demonstration, or clinic in affiliation with a comparable health professional licensed, registered, or certified pursuant to this chapter;

(3A) To an individual retained to testify as an expert witness in any court or administrative proceeding, hearing, or trial;

(4) To a health professional who is authorized to practice a health occupation in any state adjoining the District who treats patients in the District if: