Valleywise Health (formerly Maricopa Integrated Health System), is a public hospital and healthcare system based in Phoenix with Community Heath Centers located throughout Maricopa County, Arizona. Valleywise Health includes the Valleywise Health Medical Center, the renowned Diane & Bruce Halle Arizona Burn Center, the Comprehensive Health Center, three Behavioral Health Centers and a network of Community Health Centers located throughout Maricopa County.
In 2024, Valleywise Health opened the new state of the art 10-story 240 bed Valleywise Medical Center on its Roosevelt Campus near downtown Phoenix. On June 26, 2025, the year-long demolition began on the iconic Maricopa Medical Center tower. On the November 4, 2025 general election, the voters of Maricopa County approved Proposition 409 - a $898 million Valleywise Health measure to expand behavioral health services, rebuild and expand Community Health Centers and to replace the Comprehensive Health Center.
History
Valleywise Health traces its roots back to 1877, when Arizona was still a territory. That year, Maricopa County opened a pest house to treat persons afflicted with communicable diseases. Valleywise Health is the direct descendant from this pre-statehood beginning of public health care in Phoenix and Maricopa County. In October 2018, the organization announced that it would change its name from Maricopa Integrated Health System a.k.a. "MIHS" to Valleywise Health effective mid-2019.
Maricopa County's residents approved the formation of a Special Health Care District in 2003 which is the elected governing body that provides public oversight over Valleywise Health. The five members of the District's Board of Directors are elected by the citizens of Maricopa County and serve as public officials for a term of four years. A.R.S. §§ 48-5502; 48-5503.
↑Wood, MacDonald (1999). From a Pest House to a Hospital to a System: The Evolution of Maricopa Integrated Health System. Heritage Publishers. ISBN9780929690483.
↑Kwok, Alex (July 14, 2020). "What to know about the Maricopa County special health care district election". Arizona Republic. Archived from the original on May 29, 2026. Retrieved December 27, 2025. The five members who make up the board of directors are responsible for everything from budgets and capital projects to rate-setting for services, practices to reduce disease and death, personnel decisions and plans to meet community needs. Members represent each of the five county supervisory districts and serve four-year terms. There's no compensation except a per diem for attending the once-a-month meetings.