When a person non compos mentis is a party defendant in an action, process shall be served upon him personally, if within the District, and upon his committee, if there is one within the District.
D.C. Code § 13-333
Service on incompetent persons
Dec. 23, 1963, 77 Stat. 513, Pub
Official source: D.C. Law Library (Council of the District of Columbia). Reproduced from public-domain District of Columbia statutes; confirm against the official source for the current text. Not legal advice.