According to new research from InterStudy Publications, a division of Decision Resources, Inc., preferred provider organizations (PPOs) dominate the U.S. managed care landscape. A new database, The PPO County Estimator 4.0, finds that PPO penetration rates exceeded HMO penetration rates in more than 91% of all counties in 2002. PPOs have steadily become a popular alternative to HMOs, primarily for their ability to offer more provider choice and less restriction for patients and providers.

"PPO enrollment growth is due in part to an expansion of population in certain areas," said Rebecca Waller, PPO project manager for InterStudy Publications. "But the majority of this growth is at the expense of HMO enrollment at the national, state, and county levels."

About The PPO County Estimator

The PPO County Estimator is the ONLY source for PPO estimated market shares by county and is based on covered lives data from over 80% of surveyed PPOs. This database contains a unique set of PPO information that provides a county-level look into the PPO market, allowing users to access key strategic planning information. Research is provided in an easy-to-use, Access-based interface with raw data available in both Excel and Access formats.

About InterStudy Publications

InterStudy Publications, a division of Decision Resources, offers data, directories, and analyses of the ever-evolving managed care industry. InterStudy tracks changes and trends in HMO and PPO services, enrollment, and profitability. Visit InterStudy Publications at

About Decision Resources

Decision Resources is a world leader in research publications, advisory services, and consulting designed to help clients shape strategy, allocate resources, and master their chosen markets. The company has provided strategic information services for 30 years, and assesses international pharmaceutical and health care industry trends. Visit Decision Resources at

All company, brand, or product names contained in this document may be trademarks or registered trademarks of their respective holders.

  For more information, contact:    Frank Sama                              Elizabeth Marshall    InterStudy Publications                 Decision Resources    781-296-2553                            781-296-2563           

SOURCE: Decision Resources

CONTACT: Frank Sama of InterStudy Publications, +1-781-296-2553,; or Elizabeth Marshall of Decision Resources, +1-781-296-

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