Pub. L. 88-241, pt. II, tit. 14, ch. 3, sec. 14–307
Physicians
§ 14–307. Physicians (a) In the courts of the District of Columbia a physician or surgeon may not be permitted, without the consent of the person afflicted, or of his legal representative, to disclose any information, confidential 77 Stat. 520in its nature, that he has acquired in attending a patient in a professional capacity and that was necessary to enable him to act in that capacity, whether the information was obtained from the patient or from his family or from the person or persons in charge of him. (b) This section does not apply to: (1) evidence in criminal cases where the accused is charged with causing the death of, or inflicting injuries upon, a human being, and the disclosure is required in the interests of public justice; or (2) evidence relating to the mental competency or sanity of an accused in criminal trials where the accused raises the defense of insanity, or in the pretrial or posttrial proceedings involving a criminal case where a question arises concerning the mental condition of an accused or convicted person.