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.

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 LewSenator demands answers from DOJ on Russia bribery probe Koskinen's role in the ObamaCare bailout another reason Trump must terminate him The debt limit is the nation's appendix — get rid of it 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 McDonoughObama: Bannon, Breitbart shifted media narrative in 'powerful direction' DNC chairman to teach at Brown University Trump mocked Obama for three chiefs of staff in three years MORE and Ron Klain, the former chief of staff to vice presidents Joe BidenJoseph (Joe) Robinette BidenOvernight Tech: FCC won't delay net neutrality vote | Google pulls YouTube from Amazon devices | Biden scolds social media firms over transparency Medicaid funds shouldn't be used to subsidize state taxes on health care Biden hits social media firms over lack of transparency MORE and Al GoreAl GoreTrump’s isolationism on full display at international climate talks Overnight Energy: Trump officials defend fossil fuels, nuclear at UN climate summit | Dems commit to Paris goals | Ex-EPA lawyers slam 'sue and settle' policy Al Gore: A new president in 2020 could keep US in Paris agreement MORE.