A Midwestern health insurer is expanding a proprietary health care provider network program into a new market.

Principal Financial Group Inc., Des Moines, Iowa, says current and future health insurance customers can begin using its Principal Edge Network in the Dallas-Fort Worth area starting March 1.

The network includes about 5,000 primary care physicians, specialists and facilities, and it has a 99.6% claim payment accuracy record, Principal says.

The network provides online access to claims status, patient eligibility and basic benefit information, the company says.