CDC Director Mandy Cohen serves concurrently/ex officio as ATSDR administrator and CDC director, heading the Office of the Administrator. Patrick N. Breysse, PhD. serves as director of NCEH/ATSDR, heading the Office of the Director. The ATSDR administrator/CDC director, who provides overall leadership of the agency, is appointed by the president of the United States; the appointment does not require Senate approval. The ATSDR administrator appoints the NCEH/ATSDR director, who is responsible for managing the agency's programs and activities.