Queen of the Valley Medical Center is a Catholic hospital in Napa, California, run by Providence Health & Services. It opened in 1958, taking the place of the earlier Parks Victory Memorial Hospital, and operates as a Level III adult trauma center. According to the North Bay Business Journal, it ranks as the largest employer in Napa County, California.
The facility offers a range of services, including a regional cancer center (whose oncology program earned accreditation as reported in January 2015), a regional heart center, trauma and emergency care, imaging, rehabilitation, orthopedics, maternity and infant care, and women’s imaging.
The medical center has no documented direct connection to the Zodiac case in the source text; it is included as a Napa-area institution for geographic context.