This chapter does not limit or affect the right to serve process in any other manner now or hereafter required or permitted by:
D.C. Code § 13-331
Attachment and garnishment proceedings, service of process in proceedings, see § 16-502. Corporations, service of process upon, see § 29-612. Insurance companies, service of process upon, see §§ 31-4323 and 31-2502.23. .