D.C. Mun. Regs. tit. 17, § 9506
9506.1 An applicant currently working in another jurisdiction as an MA-C shall apply for MA-C by endorsement in order to work in the District of Columbia as an MA-C.
9506.2 An applicant for MA-C by endorsement shall submit proof of:
(a) Current unencumbered registration or certification as an MA-C in another jurisdiction; or
(b) Having passed the NCSBN MACE or other medication aide examination accepted by the Board; and
(c) Documentation from the applicant's supervising nurse or employer attesting to the trainee's satisfactory performance of nursing related services for a period of time not less than one (1) year.
SOURCE: Final Rulemaking published at 66 DCR 11404 (August 23, 2019).