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Welcome! We’re So Happy You’re Here.

Thank you for choosing Quartz Medicare Advantage. We are honored that you have entrusted us with your health insurance needs and we are committed to making your experience be the best it can be. Giving you the information you’ll need to make the most of your benefits is a great place to start. Find your specific plan information by clicking on your county below, or check out our recent blog posts. 

Gundersen Health System
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Wisconsin Service Counties:

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Gundersen Health System

Minnesota Counties

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Wisconsin County

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Illinois County

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Contact Us

By Phone: (800) 394-5566
TTY 711 or (800) 877-8973
Monday - Friday
8:00 a.m. - 8:00 p.m.
October 1 - March 31
Saturday - Sunday
8:00 a.m. - 8:00 p.m.

By Mail:
Quartz Medicare Advantage
840 Carolina Street
Sauk City, Wisconsin 53583