Unknown defendant or unlicensed defendant

(a) Section 16-2802 shall not apply to: (1) Any intended defendant whose name is unknown or who was not licensed at the time of the alleged occurrence or is unlicensed at the time notice is given; (2) Any claim that is unknown to the person at the time of filing his or her notice; or (3) Any intended defendant who is identified in the notice by a misnomer. (b) Nothing indicated herein shall prevent the court from waiving the requirements of § 16-2802 upon a showing of good faith effort to comply or if the interests of justice dictate.