100 Most Influential People in Healthcare - 2023

The Permanente Federation, a consortium of all the Permanente Medical Groups, supports more than 23,000 physicians and 80,000 staff members serving Kaiser Permanente’s 12.6 million members. Ansari and Davidoff provide strategic direction to the physician groups and team with the Kaiser Foundation Health Plan and Hospitals to set Kaiser Permanente’s national strategy. Ansari is also the CEO and executive director of Oakland, California-based The Permanente Medical Group and president and CEO of the Mid-Atlantic Permanente Medical Group. In addition to his co-CEO role, Davidoff is also executive medical director and chair of the Southern California Permanente Medical Group; chair and CEO of the Southeastern Permanente Medical Group in Georgia; chair and CEO of the Hawaii Permanente Medical Group; and a board member of the Kaiser Permanente Bernard J. Tyson School of Medicine.