Member of American Public Health Association, Institute of Medicine of National Academy of Sciences (board directors), The Conference Board, California Business Roundtable, Western Consortium for Public Health, Group Health Association American, California Association Hospitals and Health Systems, American College Preventive Medicine, American Hospital Association, Alpha Omega Alpha.
Intern in internal medicine, pediatrics. Health officer, director Multnomah County, Oregon. Vice president, area medical director Northwest Permanente Kaiser Foundation Health Plan and Hospitals, Portland, Maine, 1981—1985, vice president, regional manager Colorado, 1985—1988, senior vice president, regional manager North Carolina, 1988—1989, vice chairman board directors Oakland, California, 1990—1991, Chief Executive Officer, 1992—2002.
Board directors Pacific Gas and Electrical Company, Hewlett Packard, Healthcare Forum, Bay Area Council, California College Arts and Crafts, Colby College. Trustee Rockefeller Foundation. Board directors Agilent Technologies Inc., Dynavax Technologies Corporation, Raffles Medical Group, Inc., McKesson Corporation, since 2004.