Henry and Marilyn Hansel, owners of Sonoma County’s largest network of auto dealerships, have donated $10 million to the foundation that supports Providence Santa Rosa Memorial Hospital to help fund construction of health care hub for cardiology, imaging and women’s health. The new imaging center will occupy the 16,000-square foot first floor of the new medical office building at 1162 Montgomery Drive, which will be called the Hansel Family Care Center. With space freed up on the bottom floor of the Doyle Park Drive complex, the Hansels’ $10 million gift will help fund the creation there of a women’s health center.