HealthLeaders-InterStudy, a leading provider of managed care market intelligence, reports that provider-owned HMOs in the Madison, Wis.,-area are maintaining market share despite a national trend of declining HMO enrollment. According to the latest Wisconsin Health Plan Analysis, Madison-area HMOs have also resisted the national trend of other provider-owned HMOs selling to national insurers.

"There is a desire in the Madison, Wis. area to keep healthcare local, and as a result, provider-owned HMOs are maintaining enrollment," said Ric Gross, analyst with HealthLeaders-InterStudy and author of the report. "However, with employers maintaining locations in multiple states, it is becoming increasingly difficult to sustain this structure. Some local HMOs have been purchased, or are the targets for purchase. Others may be looking into PPO product lines."

Madison-area Dean Health Plan has the state's largest HMO market share at 19.52 percent, though the plan's enrollment did decline from 209,453 in 2007 to 184,167 as of January 2008. Dean Health Plan established a PPO product within the last two years.

Security Health Plan, owned and operated by the Marshfield Clinic, increased enrollment from 81,486 in January 2007 to 92,797 in January 2008. This growth came from the inclusion of Security Health Plan in the Wisconsin State Group Health Insurance Program for 2007, which includes 17 counties. Dean Health plan is also a participant in this state employee health plan.

About Health Plan Analysis

Health Plan Analysis identifies key health plan trends, allowing healthcare businesses to create comprehensive strategic plans and sales strategies at state and local levels. Updated quarterly, Health Plan Analysis provides a detailed look at plan design and financials, as well as information about mergers, legislation and other influencers driving healthcare in a particular region.

About HealthLeaders-InterStudy

HealthLeaders-InterStudy, a Decision Resources, Inc. company, is the authoritative source for managed care data, analysis and news. For more information, please visit .

About Decision Resources, Inc.

Decision Resources, Inc. is a cohesive portfolio of companies that offers best-in-class, high-value information and insights on important sectors of the healthcare industry. Clients rely on this analysis and data to make informed decisions. Please visit Decision Resources, Inc. at .

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  For more information, contact:    Lisa Osgood                              Elizabeth Marshall   HealthLeaders-InterStudy                 Decision Resources, Inc.   781-296-2606                             781-296-2563              

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SOURCE: HealthLeaders-InterStudy

Contact: Lisa Osgood of HealthLeaders-InterStudy, +1-781-296-2606,; or Elizabeth Marshall of Decision Resources, Inc.,

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