Los Angeles County Department of Health Services
Los Angeles CA, 2004 - 2005 & 2006 - 2008

Johns Hopkins Medicine
Howard County General Hospital
Columbia MD, 2006 & 2007-2008

Memorial Healthcare System
Hollywood FL, 2007

Lewistown Hospital
Lewistown PA, 2007

Southcoast Hospitals Group
New Bedford MA, 2006 - 2007

Children's Hospital & Research Center at Oakland
Oakland CA, 2006 - 2007

Memorial Hospital
Belleville IL, 2005 & 2006 - 2007

Health First
Rockledge FL, 2006

The Boeing Company
Enterprise Health Services
Seattle WA, 2006

University of California
Office of the President
   representing:
   UC Davis Health System
   UC Irvine Medical Center
   UCLA Healthcare
   UC San Diego Medical Center
   UC San Francisco Medical Center
Oakland CA, 2005 - 2006

Bay Area Community Informatics Project
Coos Bay OR, 2005 & 2006

Albany Medical Center
Albany NY, 2005

Flagstaff Medical Center
Flagstaff AZ, 2005

Erlanger Health System
Chattanooga TN, 2005

University of Utah Health Sciences Center
University of Utah's University Hospital
Salt Lake City UT, 1993 & 2004

Luther Midelfort-Mayo Health System
Eau Claire WI, 2004

University of California San Francisco Medical Center
San Francisco CA, 2004

Western North Carolina (WNC) Health Network, Inc.
Asheville NC, 2002-2004

Taconic IPA, Inc.
Fishkill NY, 2003 & 2004

HCA, Inc.
Nashville TN, 2003

MeritCare Health System
Fargo ND, 2003

John Muir Health
(formerly) John Muir / Mt. Diablo Health System
Walnut Creek CA, 1995 & 2003

WestCare Health System
Sylva NC, 2003

Stratum Med, Inc.
Urbana IL, 1999 & 2003

Park Nicollet Health Services
Methodist Hospital
St. Louis Park MN, 1993 & 2002

Wishard Health Services
Indianapolis IN, 2002

Rady Children's Hospital of San Diego
(formerly) Children's Hospital and Health Center
San Diego CA, 2001

Christiana Care Health System
(formerly) Medical Center of Delaware
Wilmington DE, 1996 & 1998 & 2001

Craven Regional Medical Center
New Bern NC, 1995 -1996 & 2001

Allina Health System
Minnetonka MN, 2001

Children's Memorial Hospital
Chicago IL, 2001

Medical Associates of San Mateo County
San Mateo CA, 2000

Doctors Medical Center
Modesto CA, 2000

Hartford Hospital
Hartford CT, 2000

OSF HealthCare System
Saint Francis Medical Center
Peoria IL, 1993 & 2000

University of Texas
Southwestern Medical Center at Dallas
Dallas TX, 1999

The University of Maryland Medical System's
Deaton Specialty Hospital & Home
Kernan Hospital
Baltimore MD, 1999

Saint Agnes Medical Center
Fresno CA, 1999

George Washington University Medical Center's Medical Faculty Associates
Washington DC, 1999 

Bloomington Hospital and Healthcare System
Bloomington IN, 1998-1999

WellSpan Health
(formerly) South Central Community Health
(formerly) York Health System
York PA, 1997 & 1998 & 1999

Summit Medical Center
Oakland CA, 1997 & 1998 & 1999

Mount Sinai Medical Center
Miami Beach FL, 1998 

Kaweah Delta Health Care District
Visalia CA, 1998 

Sentara Healthcare
Norfolk VA, in conjunction with
Williamsburg Community Hospital
Williamsburg VA, 1998 

Syracuse Community Health Center, Inc.
Syracuse NY, 1998 

Doylestown Hospital
Doylestown PA, 1997-1998 

Wilson Medical Center
(formerly) Wilson Memorial Hospital
Wilson NC, 1990 & 1994 -1995 &1998 

St. Elizabeth Medical Center
Edgewood KY, 1993 & 1998 

Inova Health System
Falls Church VA, 1997 

Friends Hospital
Philadelphia PA, 1997 

Valley Health System
Hemet CA, 1997 

Mount Carmel Health System
Columbus OH, 1997 

Thomas Jefferson University Hospital
Philadelphia PA, 1995-1996 

St. Barnabas Hospital
Bronx NY, 1996 

Memorial Health Alliance
Mount Holly NJ, 1996 

The Valley Hospital
Ridgewood NJ, 1996

Presbyterian Healthcare System
Dallas TX, 1996 

Hennepin County Medical Center
Minneapolis MN, 1996 

(formerly) Physician Reliance Network
Dallas TX, 1996

Lehigh Valley Hospital and Health Network
(formerly) Lehigh Valley Hospital
Allentown PA, 1995 

Promina Health System
Marietta GA, 1995

Mission Hospitals
(formerly) Mission St. Joseph's Health System
(formerly) Memorial Mission Medical Center
Asheville NC, 1995 

State University of N.Y. University Hospital
(formerly) State University of N.Y. Health Sciences Center
Syracuse NY, 1995 

Peter MacCallum Cancer Institute
Melbourne VIC Australia, 1995 

Huntsville Hospital
Huntsville AL, 1995 

University of Cincinnati's University Hospital
Cincinnati OH, 1995 

Williamsburg Community Hospital
Williamsburg VA, 1994 -1995 

Albert Einstein Healthcare Network
Philadelphia PA, 1993-1994 

University of Pittsburgh Medical Center
Pittsburgh PA, 1993 -1994 

Concord Hospital
Concord NH, 1993

St. Vincent Hospitals and Health Services
Indianapolis IN, 1993 

Saint Thomas Hospital
Nashville TN, 1993 

Penrose-St. Francis Healthcare Systems
Colorado Springs CO, 1993

The Cleveland Clinic Foundation
Cleveland OH, 1993 

Univ. of Washington/Harborview Medical Center
Seattle WA, 1992

Tenet Health System 
(formerly) National Medical Enterprises
Santa Monica CA, 1992 

University of Illinois Hospital and Clinics
Chicago IL, 1992 

Lakeland Regional Health System
St. Joseph MI, 1992 

Abington Memorial Hospital
Abington PA, 1992 

Good Samaritan Hospital of Santa Clara Valley
San Jose CA, 1991 

El Camino Hospital District
Mountain View CA, 1991 

San Mateo County General Hospital
San Mateo CA, 1990