ScienceInsider has the story here.
Money quote here:
Besides running his own institute, Berg pitched in on NIH-wide projects. He helped lead efforts to overhaul the NIH peer-review system, devise new awards for young scientists, and shore up basic behavioral research at NIH. He’s also known for his openness with the research community. For example, he recently posted data on the NIGMS blog on how peer-review scoring works and a much-discussed analysis suggesting that midsize labs are the most productive.