Nancy-Ann DeParle, a White House deputy chief of staff and the president's point person on his signature health care law, is leaving the West Wing to join the Brookings Institution. 

Brookings president Strobe Talbott announced in a post on Twitter that the longtime Obama staffer would work as a guest scholar for the think tank.

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Before being named deputy chief of staff, DeParle served as the director of the White House Office of Health Reform. In that role, she led the administration's efforts on health care issues during the contentious debate over the Affordable Care Act.

Before joining the Obama administration, DeParle served as a key health policy adviser to President Clinton, and ran the Medicare, Medicaid, and SCHIP programs during his tenure. She previously work as associate director for health and personnel at the Office of Management and Budget, and served as a fellow at Harvard's Kennedy School and an adjunct professor at the University of Pennsylvania's Wharton School during the Bush Administration.

DeParle's exit comes at a time when the Obama administration is being criticized for a string of white, male appointments to high-level positions. On Wednesday, the White House posted a picture to its social media networks featuring DeParle, among other female staffers, as an apparent rebuttal to a New York Times report commenting on the "all-male look" of the president's inner circle.

It also comes just a day after her boss, White House chief of staff Jack LewJacob (Jack) Joseph LewHogan urges Mnuchin to reconsider delay of Harriet Tubman bill Mnuchin says new Harriet Tubman bill delayed until 2028 Overnight Finance: US reaches deal with ZTE | Lawmakers look to block it | Trump blasts Macron, Trudeau ahead of G-7 | Mexico files WTO complaint MORE, was nominated to head the Treasury Department. DeParle had been considered a contender to replace Lew, although recent reports suggest that the president has narrowed his search to deputy national security adviser Denis McDonoughDenis Richard McDonoughDemocratic candidates should counter Trump's foreign policy Paul Ryan joins University of Notre Dame faculty Senate Intel leaders ask judge not to jail former aide amid leak investigation MORE and Ron Klain, the former chief of staff to vice presidents Joe BidenJoe BidenBiden, Eastland and rejecting the cult of civility Inslee unveils plan to fight fossil fuel pollution Biden lays out immigration priorities, rips Trump for 'assault on dignity' MORE and Al GoreAlbert (Al) Arnold GoreDowney: Why I returned stolen campaign material — a lesson for Donald Trump Trump campaign considering making a play for blue state Oregon: report What I saw at the last impeachment: Rules are for little people MORE.