D.C. Mun. Regs. tit. 17, § 7605
7605.1 The Board may issue a license to practice respiratory therapy by endorsement to an applicant who:
(a) Is currently licensed to practice respiratory care in another state according to standards that were the substantial equivalent to the District's at the time of the licensing;
(b) Has continually remained in good standing under the laws of another state with standards that the Board determines to be comparable to the requirements of the Act and this chapter;
(c) Possesses a valid and current certification as a Certified Respiratory Therapist (CRT) or Registered Respiratory Therapist (RRT), issued by the National Board for Respiratory Care (NBRC); and
(d) Meets the other applicable requirements of D.C. Official Code § 3-1205.03.
SOURCE: Final Rulemaking published at 46 DCR 7282 (September 17, 1999); as amended by Final Rulemaking published at 66 DCR 11586 (August 30, 2019).