Lubbock, Texas September 24, 2007 Interplan Health Group (IHG) and The Parker Group are
pleased to announce their merger, resulting in a strategic alliance that will bring value-driven
healthcare to a nationwide client base.

Paul Glover of IHG and Ted Parker of The Parker Group, Chairmen and CEOs of their respective
companies, have been in discussions regarding this merger for several months and are excited to see
the partnership come to fruition. Both The Parker Group and IHG have made significant strides in
transforming their organizations to adapt to the ever-changing healthcare landscape, and the merger
will further accelerate this process for both companies.

Glover, who will serve on The Parker Group board of directors, said, Joining forces with The Parker
Group will allow us to capitalize on the opportunity to deliver affordable healthcare to our members
throughout the country. Affordable healthcare options are necessary to help employers maintain a
healthy and active workforce, preventing layoffs and keeping jobs where they should be. The Parker
Groups additional product offerings will help us better serve our members as we strive to reach the
balance of cost containment and quality care. Ted Parker and I have had similar visions of delivering
cost-effective, high-quality healthcare. This merger will allow us to build on these fundamental values
and change the face of healthcare as we know it.

Parker, who will continue to serve as The Parker Groups Chairman and CEO, said, Merging with
IHG brings The Parker Group additional, highly sought-after services to round out our already
comprehensive product offerings. Pharmacy Benefit Management services through AmeriScript will
allow us to truly become a full-service integrated healthcare services organization, giving our groups
and members the ability to control their healthcare costs from every perspective. IHGs 1.5 million
members will strengthen our combined product portfolio and push our total combined members over
the 2 million mark. This alliance will result in increased stability and value to our PPO networks and
providers and broaden our national footprint for expanded coverage. Our goal is to continue to focus
on creating more value for our customers without ever sacrificing quality. Our company can only be
as successful as our customers are; if theyre happy, Im happy.

Parkers vision is to build the largest integrated and independent healthcare services group in the
country and he seeks to grow the company to revenues in excess of $1billion. This merger with IHG
should prove to significantly contribute to Parkers ability to meet this ambitious goal.

Interplan Health Group (IHG) is a health services and medical cost containment company specializing
in providing a broad array of managed care products and services. IHGs clients include local and
multi-state employer groups, trust funds, insurance companies, third party administrators and self-
funded employers. IHGs products and services have proven to significantly reduce overall
administrative expenses and cost of quality healthcare services for our clients, which cover a broad
range of members from injured workers to traditional and non-traditional group health plans.

The Parker Group, Inc., founded in 1983, is a privately held healthcare services company. The
company is headquartered in Lubbock, Texas, and is planning a move to the Dallas/Fort Worth area
by early 2008. In 2003, Parker launched an aggressive strategy to expand the scope of The Parker
Group through a series of acquisitions to build an industry-leading healthcare services company. The
Parker Group is comprised of distinct but synergistically linked business units within the healthcare
marketplace.

For additional information, contact Tiffany White at (806) 473-3075 or twhite@theparkergroup.com.