Denny Sanford died at 90 after donating more than $4 billion during his lifetime, leaving behind a legacy of philanthropy and controversy.

T. Denny Sanford, First Premier Bank owner and South Dakota's richest has died at 90. Gov. Larry Rhoden praised his legacy. A cause of death was not announced.

The credit card magnate turned mega-donor built one of the country's largest rural health systems.

Denny Sanford died at 90 after donating more than $4 billion during his lifetime, leaving behind a legacy of philanthropy and controversy.

T. Denny Sanford, a philanthropist who donated billions toward healthcare and for whom the 58-hospital Sanford Health is named, died July 18 at the age of 90. | The Midwest…