Leadership team

Our leadership team is composed of executives who are committed to making strides in total health for our members.

Regional and medical group leaders


Carrie Owen Plietz
Regional President, Northern California
Maria Ansari, MD, FACC
CEO and Executive Director, The Permanente Medical Group
Michelle Gaskill-Hames
Regional President, Southern California
Ramin Davidoff, MD
Executive Medical Director and Chairman of the Board, Southern California Permanente Medical Group


Michael Ramseier
Regional President
Jeffrey Krawcek, MD, MBOE, SPHR
President and Executive Medical Director, Colorado Permanente Medical Group


Pamela Shipley
Regional President
Nkem Chukwumerije, MD, MPH, FACP
President and Executive Medical Director, The Southeast Permanente Medical Group


Ed Chan, RD, FACHE
Market President
John Yang, MD
President and Medical Director, Hawaii Permanente Medical Group

Mid-Atlantic States

Israel Rocha
Regional President
Maria Ansari, MD, FACC
President and CEO, Mid-Atlantic Permanente Medical Group


Jeff Collins
Regional President
Leong Koh, MD
President and CEO, Northwest Permanente
Cyrus J. Lee, DMD
Executive Dental Director and CEO, Permanente Dental Associates


Angela M. Dowling
Regional President
Linda Tolbert, MD, JD, EdD, MPH
Chief Executive Officer and Executive Medical Director, Washington Permanente Medical Group