In the span of just 12 years, Hoag not only opened a 154-bed hospital on the site of the former Irvine Regional Hospital and Medical Center on Sand Canyon Avenue — transforming it into Hoag Hospital Irvine — but also built a 150,000-square-foot heath center nearby with primary and specialty care services.

Officials in June 2021 purchased the property from Irvine-based landlord Healthpeak Properties, Inc. for $226 million.

Now Hoag is taking another bold step to transform its Irvine holdings into a “new healthcare destination” and is inviting supporters and philanthropists to be a part of the largest capital campaign in its 70-year history.

Officials on Thursday kicked off “Boldly Hoag,” a mission to raise $300 million by 2025. The effort will build off of a $50-million gift from billionaires David and Diana Sun, of the Sun Foundation, announced in March. In recognition of that contribution, Hoag’s Irvine campus will be named the Sun Family Campus.