Sutter Health named longtime Sutter executive Sarah Krevans COO for the Sacramento-based, not-for-profit health care network. The COO role has been vacant since Sutter Health President and CEO Pat Fry left the position in 2005. Krevans, who assumes her new role in January 2012, will oversee the operations of Sutter Health's five Northern California regions and the Sutter Care at Home network of home health and hospice services.