Mark Tabek

Concentra Preferred Systems, Inc. provides medical bill review services. The company offers inpatient, outpatient, physician, and specialty bill review services to the health care industry. It also provides technology and solutions that reduce claim transaction costs for healthcare payers. Concentra Preferred Systems is headquartered in Naperville, IL.

Beech Street Corp. provides network and healthcare management services. Its services include Network Services like PPO Network, transplant network, repricing technology, and clinical services like disease management, maternity options management and specialty services. The company was founded in 1951 and is headquartered in Lake Forest, CA.

ppoNEXT, Inc. provides healthcare management and network services. It offers web-based claims processing which allows customers to re-price claims electronically. The company was founded by Asim Ashary and George Bregante in 1999 and is headquartered in Addison, TX.

The Society of Actuaries is an organization that provides research and industry news on various topics such as health care, predictive analytics, climate change, risk management, life insurance, modeling, pension and retirement, public policy, law and regulation. The private company is based in Schaumburg, IL. The company aims to help individuals advance their careers.

Private Healthcare Systems, Inc. provides health care cost management services. The company provides its services to include self-insured employers, third-party administrators, Taft Hartley Funds, insurance companies and managed care organizations. It meets strategic, financial and quality needs of health care purchasers through care management services. The company was founded in 1985 and is headquartered in Waltham, MA.

Ernst & Young provides accounting services. Its services include auditing, accounting, tax and transaction services, assurance and advisory business, online transaction advisory and a wide range of financial services. The company was founded by Arthur Young and Alwin C. Ernst in 1881 and is headquartered in Kansas City, MO.

HealthMarkets, Inc. provides health and life insurance services to individuals, families and small businesses. Its products include health plans and supplemental plans. The company was founded in 1984 and is headquartered in North Richland Hills, TX.

Blue Cross & Blue Shield of Massachusetts, Inc. provides indemnity insurance and medicare extension programs. The firm offers medical and dental plans, pharmacy coverage, vision coverage and health savings accounts. The company was founded in 1937 and is located in Boston, MA.