New York


Henry C Quillen

[email protected]
Portsmouth Office


Mr. Quillen has extensive experience litigating matters involving healthcare and antitrust issues. He has briefed and argued dispositive motions in In re Blue Cross Blue Shield Antitrust Litigation, MDL No. 2406, and he was one of the primary attorneys representing the plaintiffs in OMNI Healthcare, Inc. v. Health First, Inc., which resulted in a $32 million settlement. He has also obtained a favorable ruling from the Arkansas Supreme Court on behalf of an air ambulance provider in Air Evac EMS, Inc. v. USAble Mutual Insurance Co. The D.C. Circuit cited Mr. Quillen’s amicus brief for the American Medical Association when affirming an injunction against the merger of Anthem and Cigna in United States v. Anthem. In 2016, Mr. Quillen was named a “Rising Star” by Law360 for his work in competition law, one of just seven attorneys to be honored in his field that year.

Before joining Whatley Kallas, Mr. Quillen was an associate in the litigation department of Sullivan & Cromwell LLP, where he focused on complex commercial litigation. He also served as a law clerk to the Honorable A. Raymond Randolph of the United States Court of Appeals for the District of Columbia Circuit, as well as the Honorable Jeffrey Howard of the United States Court of Appeals for the First Circuit.

Mr. Quillen graduated from Harvard College magna cum laude (A.B., Biochemical Sciences, 2000) and Yale Law School (J.D., 2007). He also received a Master in Public Administration from the John F. Kennedy School of Government (2007). He is a member of the American Bar Association and admitted to practice in New York, New Hampshire, the District of Columbia, the United States District Courts for the District of Colorado, District of Columbia, and District of New Hampshire, the United States Courts of Appeals for the First, Eighth, Tenth, Eleventh, and District of Columbia Circuits, the United States Court of Appeals for Veterans Claims, and the United States Supreme Court.

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