The company would not disclose the amount of the deal, which it said would close by the middle of October.

RevolutionHealth.com, the online portal launched in 2007 by Case and the flagship Web site for Revolution Health Network, had been exploring strategic alternatives, including a possible merger, for the better part of this year, as Workforce Management first reported in July. The Washington, D.C., online health resource had hoped to tap into the growing demand among employers for health and wellness information for employees.

But Revolution Health Revolution Health scaled back those efforts this year, refocusing on licensing its product to health plans and expanding its presence in the consumer market, which the merger with Waterfront will do.

Waterfront Media, based in New York, said the new company, which would include Revolution’s online properties, was projected to have more than 20 million unique users.

Case will join Waterfront’s board of directors along with another member of Revolution Health’s board.  The company will keep the name Waterfront Media and will operate under the Everyday Health Network, according to a press release.

Waterfront founder and chief executive Ben Wolin will be CEO of the combined company.

The merger would rival competitor WebMD in Web traffic for online health portals.