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Our History

Valleywise Health: Over 140 years of putting our patients first.

We’ve been around for nearly a century-and-a-half, and our commitment to providing the best care for you and other Valley residents has remained the same. Click through the timeline below to see how we’ve grown over the years to better serve more of our community’s needs.

2021

Valleywise Comprehensive Health Center – Peoria opens at Grand Avenue and Cotton Crossing.

2020

Valleywise Health Medical Center Named Among the Nation’s “100 Top Hospitals” by IBM Watson Health. Learn more here.

2020

Valleywise Health breaks ground on new medical center at 24th Street and Roosevelt. Watch the ceremony here.

2019

MIHS reopens the Emergency Department at Maryvale hospital and opens 48 behavioral health beds, with plans for a total of 192 beds.

2018

Groundbreaking for new West Valley Primary and Specialty Care Center in Peoria.

Valleywise Health announces purchase of Valleywise Behavioral Health Center – Maryvale

MIHS, Creighton University School of Medicine, Dignity Health St. Joseph’s Hospital and Medical Center, and District Medical Group, Inc., announce the Creighton University – Arizona Health Education Alliance.

Pop superstar Taylor Swift visits young burn patient in the Arizona Burn Center.

2017

District Board of Directors awards Vanir Construction Management, Inc. a contract to provide Integrated Program Management Construction Services for a new health care system.

MIHS opens a 14 bed Adolescent Behavioral Health Unit at its Desert Vista Behavioral Health Center in Mesa.

MIHS opens the First Episode Center to treat teens and young adults dealing with a first psychotic break.

2016

District Board votes unanimously to accept a Proposition 480 plan with objectives for rebuilding health care system.

2015

Center for Disease Control designated MIHS as an Ebola and Infectious Disease Treatment Center.

MIHS opens new Behavioral Health Unit on the campus of Maricopa Medical Center.

Steve Purves, President and CEO, begins “100 Day Workout” initiative that leads to $160 million financial turnaround of MIHS in 2 years.

2014

Bond Advisory Committee recommended the issuance of General Obligation Bonds not to exceed $935 Million.

Maricopa County voters approve Proposition 480 by an overwhelming margin of approximately 64%.

Maricopa County Special Health Care District Board voted unanimously to place a General Obligation Bond on the ballot.

2013

Betsey Bayless was appointed President Emeritus of the Maricopa Integrated Health System in September 2013 by the organization’s five member Governing Board after leading the Valley’s only public health system for eight years as President and Chief Executive Officer.

2013

Steve Purves becomes President and CEO of MIHS.

2012

Bond Advisory Committee formed.

2008

Refugee Women’s Clinic opened.

2003

Maricopa County voters approved Special Health Care District.

1999

Renovated Burn Center dedicated and renamed The Arizona Burn Center.

1995

Maricopa Medical Center expanded to 555 beds.

The graduate medical education program was the largest in the entire country.

1993

First 24-hour pediatric emergency department established.

The Comprehensive Health Center opened.

1992

Burn unit classified as a burn center.

New trauma receiving rooms built.

1991

Maricopa Integrated Health System formed.

1989

The county’s first HIV specialty clinic, the McDowell Healthcare Center, established.

1988

Helipad enlarged to accommodate four helicopters.

A crisis nursery for abused children built.

1983

Name changed to Maricopa Medical Center to reflect a more positive public perception.

1978

a 92-bed behavioral health annex opened.

Maricopa County Hospital Women’s Auxiliary formed.

1976

New burn unit building built.

1974

The crisis nursery was built at the east end of the hospital campus

1971

The new Maricopa County General Hospital opened (the current Valleywise Health location)

1967

Arizona Health Commissioner George Speedlove, County Health Commissioner Stan Farnsworth, MacDonald Wood, Derrill Manley, county hospital advisory board member Al Brewer, and Maricopa Medical Society President John Ash break ground for the new hospital.

1965

The new Maricopa County General Hospital opened (the current Valleywise Health location)