Pay for performance: How fast is it spreading?

Fairly quickly, our survey shows, but it's still more common among primary care physicians. And HMOs are more likely to offer it than PPOs.

The pay-for-performance concept continues to work its way into medical practice. Health plans, employers, and government agencies were running more than 100 P4P programs in March of this year, and the number continues to grow as more sponsors come aboard. CMS could accelerate the process: It launched a P4P pilot project involving 10 large medical groups earlier this year, and it's expected to start another pilot for smaller practices in the near future.