Demetrius
2. A physician called by Galen by the title of Archiater (De Antid. 1.1, vol. xiv. p. 4; De Theriaca ad Pison. 100.12, vol. xiv. p. 261), must have lived in the second century after Christ, as that title was not invented till the reign of Nero. (Dict. of Ant. s. v. Archiater.) Galen speaks of him as a contemporary.
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.