Nearly $2 billion in gifts from T. Denny Sanford reshaped Sanford Health, funding children’s care, genomics, virtual medicine and medical education across the Upper Midwest.
A $16 million 2004 donation launched the effort, followed by major gifts including $400 million in 2007, two $300 million commitments in 2021 and $300 million in 2025 for a new Rapid City campus.
Sanford Health leaders said the money let the system expand faster and think bigger, helping build a network that now includes 58 hospitals, 289 clinics and nearly 80 virtual-care specialties.
Patients and families tied those investments to direct outcomes, from local pediatric specialty care for children with rare disorders to rare-disease treatments that once required travel out of state.
Published hours before reports of Sanford’s death at 90, the account framed his giving as a long-term legacy in healthcare, education and community philanthropy.
How did a controversial credit card empire fund a legacy of charity and cutting-edge science?
Could microbes from his underground lab, funded by credit card fees, help solve the climate crisis?
The Life and Legacy of T. Denny Sanford: $2 Billion in Philanthropy, Lasting Impact, and Lingering Controversy
Overview
T. Denny Sanford’s passing in July 2026 sparked widespread tributes and prompted a deep look at his legacy. His extraordinary donations, exceeding $1 billion to Sanford Health, fundamentally transformed healthcare delivery in South Dakota by expanding facilities and raising ambitions across the system. Sanford’s impact reached beyond healthcare, as he was a key supporter of the Sanford Underground Laboratory and launched scholarship programs that opened educational opportunities for thousands of young people. These actions not only improved institutions but also inspired a culture of philanthropy, making his influence felt across science, education, and community life.