Recently, the healthcare PR world has seen its fair share of shakeups.

InVentiv Health's acquisition of Chandler Chicco Agency for $65 million, which took another independent healthcare PR firm off the market, was just the latest step in a trend. In February, inVentiv snapped up Chamberlain PR, and, in March, Huntsworth purchased Dorland Global Corp. in a deal that could wind up being worth $50 million.

There are two takeaways from the recent spate of healthcare-related takeovers. One is that ...