Gregory John Eisenhauer

Pet DRx Corp. provides primary and special veterinary care services for companion animals through a network of veterinary hospitals. It owns and operates approximately twenty-three veterinary hospitals located in northern and southern California. The hospitals offer a full range of general medical treatment for companion animals, including preventative care, such as vaccinations, examinations, spaying/neutering, and dental care, and a broad range of specialized diagnostic and medical services, such as x-ray, ultra-sound, internal medicine, surgery, cardiology, ophthalmology, dermatology, oncology, neurology and other services. The hospitals also sell pharmaceutical products, pet food and pet supplies. Pet DRx Corp. is headquartered in Brentwood, TN.

XLNT Veterinary Care, Inc. provides veterinary primary care services. It offers its services to pet animals through a network of fully owned veterinary hospitals. The company was founded in 2004 by Robert Wallace and is headquartered in San Jose, CA.

ProxyMed, Inc. operates as an electronic healthcare transaction processing services company in the United States. It provides connectivity, medical cost containment services, business process outsourcing solutions, and related products to physicians, payers, pharmacies, medical laboratories, and other healthcare providers and suppliers.

U.S. HealthWorks, Inc. provides occupational medicine and urgent care services. Its services include occupational medicine, urgent care, and specialty care and therapy. The company was founded by Keith M. Lieberman in 1995 and is headquartered in Valencia, CA.

RehabCare Group, Inc. engages in the provision of rehabilitation program management services. It operates through the following segments: Inpatient and Outpatient Hospital Rehabilitation Services; Contract Therapy Services, and Freestanding Rehabilitation Hospitals. The company was founded in 1982 and is headquartered in Louisville. KY.