Researchers have compiled data on $682 billion worth of claims.

But it may mean switching doctors.

They help consumers find lower prices, but there's more to it than that.

Under the ACA, insurers can no longer deny coverage for pre-existing conditions.

Both Aetna and Anthem want to merge with other companies to grow their scale.

It's a glimpse into how people make money off of piecemeal solutions.

The state has kept prices low by negotiating with insurers and limiting options.

Industry giants Anthem and Cigna are closing in on a $48 billion deal.

Obamacare is behind the wave of proposed health insurer mergers.

Back in the 1920s, firms began to be organized around a social welfare mission.