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Get to know us

Security Health Plan, a part of Marshfield Clinic Health System, is a not-for-profit health maintenance organization. We are committed to improving members' health, managing health care costs and providing them with a high-quality health care experience.

Variety of options

We offer a variety of health-insurance options for employer groups and individuals and families of all ages and income levels. Our broad provider network includes doctors, other health care professionals, hospitals and pharmacies you know and trust.

Our history in helping members obtain affordable health care costs goes back to 1971 when we were founded as the Greater Marshfield Community Health Plan, the first health maintenance organization (HMO) in Wisconsin, and the first rural HMO in the nation. The health plan became Security Health Plan in 1986.

In the intervening years we have grown significantly, and now serve more than 230,000 members in 41 Wisconsin counties.

Security Health Plan is part of Marshfield Clinic Health System. For more information on Marshfield Clinic Health System click here.

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Security Health Plan news and developments

Press releases and other articles are posted here so you can be aware of what’s happening with Security Health Plan.

View news and developments

Security Health Plan assures high-quality coverage

We pride ourselves on providing the best in affordable health care coverage. And we never stop working to give you better value with our quality assurance and improvement procedures.

Learn about our quality
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Communities Benefits Program

Security Health Plan strives to improve the health, lifestyles and overall well-being of the communities we serve. As part of our commitment, we provide charitable contributions and mini-grants to support organizations and efforts that reflect our vision of building healthy communities.

Learn more

Security Health Plan compliance tool kit

We want to help your business be a successful partner with Security Health Plan. This page gives you information you need for your company to be a business associate with Security Health Plan.

View compliance tool kit
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Service area maps

See what counties we cover for our individual and family, group, BadgerCare Plus and Advocare Medicare Advantage plans.

View our service area

Questions about Security Health Plan?

Click here to view our commonly asked questions