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A rendering of an Inova hospital in Fairfax. (Courtesy of Inova Health System)


Inova Health System

In October, the Northern Virginia health-care provider announced that it had entered into a contract to purchase eight acres of land in Ashburn at the Dulles Greenway and Loudoun County Parkway. There, Inova plans Ashburn HealthPlex, a $31 million, 50,000-square-foot project featuring a 24-hour full-service emergency department, a diagnostic imaging center and physician offices. Inova is a not-for-profit company and serves more than 1 million people in Northern Virginia annually.


On Inova's Web site, you can check how long the wait might be if you visit the emergency room.

8110 Gatehouse Rd.

Falls Church Va., 22042


Founded: 1956

CEO: J. Knox Singleton

Employees (local): 15534 (15534)

NOTE: Our methodology for the rankings.