American College of Physicians
- Membership Chair, Colorado Chapter 2005-present
- Chair, Colorado Laureate Committee 2005-present
- Governing Council, Colorado 2005-present
Associate Clincal Professor, University of Colorado, School of Medicine 2004-present
Member, Clinical Faculty Advisory Committee, University of Colorado School of Medicine 2004-present
Medical Director, Bethesda Lutheran Communities 1987-present
Chair, Colorado Medicaid Drug Utilization Review Board 2011-2013
Colorado Foundation for Medical Care
- Chair 2010-2011
- Board of Directors 2005-2011
Board Member, Colorado Clinical Guidelines Collaborative 2004-2006
Advisory Committee, Alliance Health Foundation 2005-2006
Board Member, The Denver Medical Library 2002-2006
Colorado Medical Society
- Treasurer 2006-2009
- Chair, Membership Expansion and Development Task Force 2006-2010
- Member, Board of Directors 2003-2009
Denver Medical Society
- Chairman, Medical Board 2000-2001
- President 1999-2000
- Medicare Carrier Advisory Committee 1998-2004