Mr. Guarni leads the financial strategy and operations of Hoag, overseeing financial planning, capital strategy, budgeting, revenue cycle and long-term investment planning across the system’s expanding network of hospitals, specialty institutes, ambulatory sites and community-based services. At the center of his accomplishments is his leadership of Hoag’s $1.2 billion Irvine expansion, anchored by the six-building Sun Family Campus opening in September 2026, which includes a surgical pavilion, a women’s hospital and women’s outpatient pavilion, and a cancer and digestive hospital. He has implemented proactive strategies to manage rising supply chain costs and shifting reimbursement, including bulk purchasing, vendor optimization and cost-saving initiatives that allow the system to reinvest in patient care and innovation. As changes to federal healthcare subsidies have increased the number of uninsured individuals, Mr. Guarni has helped guide Hoag’s response through partnerships with organizations such as CalOptima Health and support of community programs like the Melinda Hoag Smith Center for Healthy Living. He also serves as executive leader of Hoag’s fellowship program and helped secure the system’s sponsorship of the OC Marathon. Mr. Guarni was named “CFO of the Year” by the Orange County Business Journal in 2025, and Hoag was ranked highest of all hospitals in Orange County by U.S. News & World Report for 2025-26 and earned its fifth Magnet re-designation in 2026. Earlier in his career, he served as vice president of finance at Hoag Health and held senior finance roles including executive vice president and CFO at Tucson, Ariz.-based Carondelet Health Network and CFO at Lafayette, La.-based Our Lady of Lourdes Health Care System.
