Escher was a female Starfleet medic assigned to the USS Cerritos under DoctorT'Ana.
In 2381, Ensign Escher cured Captain Carol Freeman of Terellian Death Syndrome on account of being "in the right place with the right hypospray." For her actions, Escher was given a promotion, much to the dismay of fellow medic D'Vana Tendi. (LD: "We'll Always Have Tom Paris")
This individual was only mentioned in dialogue.