DGA was a title awarded to doctors in the 24th century Federation. This title was listed after MD.
By 2365, Les Landau, Robert Metoyer, Sam Freedle, Adele Simmons, Scott Luhrsen, and Brian Faul – all doctors at Starbase 515 – had earned this title. (TNG: "Samaritan Snare")
- "DGA", coincidentally, also stands for Directors Guild of America.