Intermountain Health was founded on April 1, 1975, after
the Church of Jesus Christ of Latter-day Saints donated fifteen hospitals, as a system, to what would become Intermountain Health. In 1982, Intermountain Health began providing non-hospital services, including clinics and home healthcare. In 2006, Intermountain renamed its health insurance plan "SelectHealth" and formalized the separate management of its insurance operations. In 2009, Intermountain Health was identified as a healthcare model by President
Barack Obama, "We have long known that some places, like the Intermountain Healthcare in Utah..., offer high-quality care at a cost below average." According to the
Kaiser Family Foundation, Utah's per capita spending on healthcare is 44 percent below the national average. In response to drug shortages and pricing scandals, Intermountain Health and other hospitals formed a
generic drug manufacturer,
Civica Rx, in 2018 to produce generic drugs that are in short supply or highly priced. In early October 2020, Intermountain Health acquired Saltzer Health of Idaho from
Tommy Ahlquist following a failed acquisition of Saltzer Health by
St. Luke's Boise Medical Center. In late October 2020, Intermountain Health and
Sanford Health signed an intent to merge. The merger would make Sanford Health a subsidiary of Intermountain Health with the resulting system consisting of 70 hospitals with 89,000 employees. In early December, the merger was postponed indefinitely after the C.E.O. of Sanford Health, Kelby Krabbenhoft, was abruptly replaced by Bill Gassen after Krabbenhoft voiced anti-mask sentiments. In early 2022, Intermountain Health launched a program for people with long-haul COVID-19 symptoms. Intermountain completed a merger with
SCL Health on April 1, 2022, expanding the healthcare system's reach into Colorado, Kansas, and Montana. Intermountain changed its name from Intermountain Healthcare to Intermountain Health in 2023. Intermountain constructed the Lehi Primary Children's Hospital for roughly $335 million between 2020 and 2024.
Gail Miller, who formerly chaired Intermountain's board, donated $50 million toward the construction of Lehi Primary Children's Hospital. The campus was named in honor of her family. The hospital began accepting patients on February 12, 2024 ==Hospitals==