Quartz Health Solutions, Inc. Insurance Quartz Health Solutions, Inc. Visit Website 840 Carolina Street Sauk City, WI 53583 (608) 644-3430 (800) 362-3310 About Map About Unity Health Insurance, a UW Health-affiliated company, was formed in 1994 to provide community-based managed health care to more than 90,000 members throughout 20 counties in southwestern and south central Wisconsin. What's Nearby? Distance: 5 10 15 20 25 50 mi.