Stewart Resigns as Sparks, Summit CEO; Tim Schmidt Named Interim by Lee Hogan Posted 3/13/2014 11:52 am Updated 2 years ago Tim Schmidt has been appointed interim CEO of Sparks Health System and Summit Medical Center following the resignation of Charles Stewart after less than six months at the position. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.