Acadian Ambulance Service, Inc.
Accordant Health Services, Inc.
Active Day Corporation
Allion Healthcare, Inc. [ALLI]
America Service Group Inc. [ASGR]
American Shared Hospital Services [AMS]
APS Healthcare, Inc.
Aptium Oncology, Inc.
Arlington Cancer Center
Audika, S.A.
Audiotech Healthcare Corporation

Beverly Oncology & Imaging Centers, Medical Group, Inc.
BioScrip, Inc. [BIOS]

Cancer Care, Inc.
CareGuide, Inc. [CGDE.OB]
Cbr Systems, Inc.
Cerebral Palsy Associations of New York State
Charleston Radiologists, PA
Clínica Baviera S.A.
Comprehensive Care Corporation [CHCR.OB]
Concentra Inc.
Continucare Corporation [CNU]
CorCell, Inc.
Corporación Dermoestética, S.A.
CRC Health Corporation
Critical Care Systems International, Inc.
Crossroads Centre at Antigua
Cryo-Cell International, Inc. [CCEL.OB]
Cygnet Health Care Limited

DaVita Inc. [DVA]
Devereux Foundation
Diagnostic Health Services, Inc.
Diakon Lutheran Social Ministries
Dialysis Clinic, Inc.
Dialysis Corporation of America [DCAI]
DMS Health Group
DMS Imaging, Inc.
Dr. Tattoff, Inc.

eScreen, Inc.
Executive Health Exams International
Expert Eye Care, Inc.

FHC Health Systems, Inc.
Flexible Corporate Plans, Inc.
Fox Chase Cancer Center
Fresenius Medical Care AG & Co. KGaA [FMS]
Fresenius SE

GENEX Services, Inc.
Gillette Children's Specialty Healthcare

Hanger Orthopedic Group, Inc. [HGR]
Hazelden Foundation
Health Dialog Services Corporation
HealthSouth Corporation [HLS]
Healthways, Inc. [HWAY]
HearUSA, Inc. [EAR]
HemaCare Corporation [HEMA.OB]
Hooper Holmes, Inc. [HH]
Hospital for Special Surgery
Hythiam, Inc. [HYTM]

InSight Health Services Holdings Corp.
Integrated Medical Systems International, Inc.
IPC The Hospitalist Company, Inc. [IPCM]

Kennedy Krieger Institute
Korian

Lifebank Corp.
LifeMasters Supported SelfCare, Inc.
Lifespan, Inc. [LSPN.PK]
Lifetime Health Medical Group
LifeWatch Corp.

Macomb-Oakland Regional Center, Inc.
Marshfield Clinic
Masterplan, Inc.
MDS Inc. [MDZ]
MedAire, Inc.
Medical Resources, Inc.
Medisys Health Group Income Fund
MedLink International, Inc. [MLKNA.OB]
Midwest Heart Specialists
Miracor Diagnostics, Inc. [MRDG.PK]
Monmouth-Ocean Hospital Service Corporation

National Renal Alliance, LLC
New York Blood Center, Inc.
NightHawk Radiology Holdings, Inc. [NHWK]
Northwestern Human Services, Inc

OnCure Medical Corp.
OptimumCare Corporation [OPMC.PK]
Optum
OptumHealth
OptumHealth Care Solutions - Complex Medical Conditions

PainCare Holdings, Inc. [PRXZ.PK]
Pediatrix Medical Group, Inc. [PDX]
Pender Financial Group Corporation
Phoenix Rehabilitation and Health Services, Inc.
Physiotherapy Associates, Inc.
PhytoMedical Technologies, Inc. [PYTO.OB]
Premier Behavioral Solutions, Inc.
Prison Health Services, Inc.
Pronger Smith Medical Care
Psychiatric Solutions, Inc. [PSYS]
Puget Sound Blood Center

QMed, Inc. [QMED.PK]

Radiation Therapy Services, Inc.
Rehabilitation Hospital of the Pacific
Renal Advantage Inc.
Roswell Park Cancer Institute

Scottish National Blood Transfusion Service
SHPS, Inc.
SleepMed, Inc.
Sound Health Solutions, Inc. [SHSO.PK]
SSI Surgical Services, Inc. [SGSI.PK]
St. John Conner Creek Village
Symbion, Inc.

Telecare Corporation
The Betty Ford Center
The Epilepsy Institute
The Floating Hospital, Incorporated
The Priory Group Limited
The Providence Service Corporation [PRSC]
TLC Vision Corporation [TLCV]

U.S. Healthworks, Inc.
U.S. Physical Therapy, Inc. [USPH]
UCI Medical Affiliates, Inc. [UCIA.OB]
United Behavioral Health

ViaCell, Inc.
Virtual Radiologic Corporation [VRAD]

Westside Women's Health Center

ZLB Plasma Services