Steven T. Johnson

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.

Fresenius Medical Care Holdings, Inc. provides kidney dialysis services and renal care products. It offers specialty pharmacy and laboratory services as well as manufacturing and distributing dialysis equipment, disposable products, and renal pharmaceuticals. The company was founded in 1996 and is headquartered in Waltham, MA.

Renal Disease Management, Inc. provides renal disease management services. The American company was founded by Steven T. Johnson.

Innovative Renal Care LLC engages in the operation of dialysis clinics. It focuses on providing kidney care and medications. The company was founded by Harry R. Jacobson, Steve Johnson, Rob Stillwell, Deborah W. Robin, and Rajiv Gupta and is headquartered in Nashville, TN.

Cardiovascular Care Group, Inc. provided inpatient and ambulatory cardiovascular services. It was a specialty hospital operator whose primary focus is the care of patients with cardiovascular diseases. The company was founded by John H. Dayani Sr., Harry R. Jacobson and Sam Brooks in 2000 and was headquartered in Nashville, TN.