Mehmet Oz Shuffles Leadership at Medicare and Medicaid Agency

May 23, 2026, 12:29 PM UTC

US Centers for Medicare and Medicaid Services Administrator Mehmet Oz is reorganizing leadership roles at the agency, a spokesperson told Bloomberg.

Rebekah Armstrong, who currently leads the agency’s office of legislation, will be the new chief of staff, spokesperson Christopher Krepich said. Before joining the administration, Armstrong worked on Capitol Hill, for health insurance lobby group AHIP, and the first Trump administration.

Stephanie Carlton, who had led the agency as deputy administrator and chief of staff, will now be focused on her deputy administrator role, according to Krepich. Her portfolio will include work on clinical artificial intelligence and ...

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