Table 2

Physician organisations in the study

NameNo of primary care physiciansNo of specialist physiciansDate of foundingLocation of central office
Cleveland Clinic2009771921Cleveland, OH
Group Health Cooperative of Puget Sound3433101947Seattle, WA
Henry Ford Health System2506001915Detroit, MI
Intermountain Health Care3001001975Salt Lake City, UT
Lovelace Clinic1071471921Albuquerque, NM
Marshfield Clinic2903201919Marshfield, WI
Mayo Clinic15413391921Rochester, MN
Park Nicollet Clinic2322531951Minneapolis, MN
The Permanente Medical Group157024491948Oakland, CA