ENVOY is the largest electronic clearinghouse for commercial claims and a leader in the pharmacy claim business. We are also the innovative creator of a variety of healthcare-related data services including eligibility and referral inquiries, rosters and encounter information for the managed care industry. Through the strength and breadth of our network that links providers, EDI service vendors, and payers, our combined transaction volume is rapidly approaching one billion transactions per year.

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Centron Data Services provides:

• Computer expertise and experience
• High volume processing capacity
• Special processing and CASS certification
• Media conversion and on-line file transmission

MediFAX® is the national leader in providing real-time, online access to critical patient eligibility and benefit information to healthcare providers in the United States and Puerto Rico. We currently offer more than 99,000 providers access to Medicaid, Medicare and Commercial payors. You'll receive information quicker and dramatically slash your administrative cost.

Michel & Associates Inc.
www.mactoledo.com

Medical Manager Corporation operates three principal lines of business: physician practice management through Medical Manager Health Systems, healthcare electronic commerce services through CareInsite, Inc., and plastics and filtration technologies through Porex Corporation.