Sachie Ishida (石田幸恵 Ishida Sachie) is the doctor who treats Hayate Yagami in A's. She works at residence::Uminari City University Hospital and is in charge of neurology. She is a kind but strict person and is very concerned for Hayate's well-being. Despite Hayate's ailment being magical in nature and beyond her efforts to cure, she never gives up She is credited simply as "Doctor Ishida" (石田医師 Ishida Ishi) in the television episodes.