Louis A. Weiss Memorial Hospital serves the residents of Chicago's North Side. The facility has about 340 beds and a medical staff of some 400 physicians covering more than 25 specialties. It conducts medical research and education programs through its affiliation with the University of Chicago Medical Center. Weiss offers a complete range of services for adults, including orthopedics, cardiology, vascular health, rehabilitation, cancer care, geriatrics, and women's health care. Specialty divisions provide laboratory, radiology, wound healing, and hospice care. Vanguard Health Systems owns 80% of the hospital and the University of Chicago Medical Center owns the rest.

Elmhurst Memorial Healthcare operates Elmhurst Memorial Hospital, a 330-bed acute care facility locate in DuPage County, Illinois, in the western suburbs of Chicago. The hospital, founded in 1926, provides a comprehensive range of medical services, from emergency care to specialty cancer and orthopedics care to behavioral health services. In addition to the hospital, Elmhurst Memorial Healthcare operates several facilities that house doctors' offices, outpatient centers, occupational health programs, and other ancillary health care operations. The health system is planning to build a new hospital campus, to be completed by the end of 2011.

When the ailing wish upon a star, Wistar might be able to find them a cure. Founded in 1892, The Wistar Institute is a not-for-profit biomedical research institution concentrating on major diseases such as cancer, immune-system disorders, heart ailments, and infectious diseases. The institute operates from about 30 laboratories with research programs targeting genetic, molecular, and cellular discoveries. The company's research has been used in the development of vaccines, pharmaceuticals, and biotechnology drugs. Wistar collaborates with educational and governmental partners.

Established in 1982, the company serves customers in the long-term care, home health, and hospice care sectors. Its medical product suppliers include Johnson & Johnson, Kimberly-Clark, Roche, and 3M Health Care. Despite its regional sounding name, Gulf South Medical Supply is a nationwide distributor of a wide variety of medical supplies for the elder care industry. The PSS World Medical subsidiary operates over a dozen distribution service centers, providing procurement, cost containment, and billing services to clients in all 50 states. Gulf South Medical Supply has some 47,000 different products, including supplies for general nursing, feeding, diagnostics, incontinence, and infection and wound care.

Medical International Technology is on a mission to rid the world of syringes. Medical International Technology (MIT) specializes in the development, marketing, and sale of needle-free jet injectors, designed for human and animal inoculations. (Reasons to use a needle-free injector include reducing pain, cross contamination, needlestick injuries, and biological waste.) Products destined for veterinary use are sold under the Agro-Jet brand, while those meant for use on humans are sold under the Med-Jet name. Subsidiary ScanView makes portable, wireless ultrasound diagnostic medical devices.

Ansell Limited is a leading manufacturer of industrial and medical gloves, condoms (brands include Kama Sutra, LifeStyles, Mates, and Unimil), and other latex products. Besides the healthcare industry, leading markets for Ansell's gloves include semiconductor and electronics manufacturers and the food manufacturing and food service industries. Its medical gloves are marketed under such brands as Encore, Gammex, and Medi-Grip. Formerly a sprawling conglomerate, Ansell divested its non-core units in order to focus on its health care products and occupational glove businesses.

Instrumentation Laboratory makes lab instruments. The company develops and manufactures diagnostic medical equipment primarily for hospitals and clinical laboratories around the globe. The company provides critical care systems, hemostasis products, and information management services. Its product lines include GEM and CO-Oximetry analyzers for critical care diagnostics, and ACL and HemosIL analyzers and reagents for automated blood and coagulation testing. Its products are marketed through global affiliates and third-party distributors. Instrumentation Laboratory was established in 1959 and is a division of private Spanish health care company Werfen Group.

Universal Health Services, Inc. owns or leases about two dozen acute care hospitals with more than 6,000 total beds, as well as seven outpatient surgery centers, radiation therapy centers, and surgical hospitals. In addition to these medical facilities, UHS runs about 200 psychiatric and substance abuse hospitals. The company's facilities are located mainly in smaller towns and cities with limited competition, but it does have operations in some larger markets, including Las Vegas, Memphis, and Austin, Texas.

Cardiogenesis will leave a hole in your heart and not feel a pang of guilt. The company's laser and fiber-optic systems are used for transmyocardial revascularization (TMR) and percutaneous myocardial channeling (PMC), procedures that use a laser to cut channels through the heart muscle into the heart chamber to help circulation in cardiac patients. Its SolarGen 2100 system, composed of fiber-optic and laser surgical tools on a powered base unit, is FDA-approved and is marketed through Cardiogenesis' sales force in the US and through international distributors. The company's PMC system is available outside the US. The company also sells catheters and other related equipment to operate its laser systems.

Emergency Medical Services Corporation company is the parent of AMR Inc., the largest private ambulance service in the US, and EmCare Holdings, a leading medical staffing firm that specializes in filling emergency rooms with doctors and nurses. AMR has approximately 3,300 contracts with clients (cities, government agencies, health care providers, and insurance companies) in more than 35 states for emergency and non-emergency transport services. EmCare provides staffing services to more than 450 hospitals and physician groups in 40 states. Private investment firm Onex controls the company.

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