Leading GPO Experiences Substantial Growth Since January 2005 Launch SOUTH SAN FRANCISCO, Calif., June 1 /PRNewswire/ -- Onmark, a leading national group purchasing organization (GPO) for community oncology, today announced that it has signed new contracts with two pharmaceutical manufacturers and expanded existing contracts with two other manufacturers. With these additions, Onmark has one of the broadest suites of contracts among all oncology GPOs. Onmark also announced that more than 1,800 oncology practices, representing more than 3,200 physicians, have enrolled as members since Onmark was launched in January 2005 by OTN, a leading specialty pharmaceutical services company. "In just 18 months, Onmark has gone from an upstart to one of the largest GPOs for community-based oncologists, experiencing tremendous growth and momentum in membership, contracts and educational program offerings. We have added more leading pharmaceutical products to our already robust contract portfolio and have significantly expanded our membership," said Clark Avery, General Manager of Onmark. Significant Growth in Contract Portfolio Onmark recently signed new contracts with Watson Pharmaceuticals for Ferrlecit(R) (sodium ferric gluconate complex in sucrose injection) and INFeD(R) (iron dextran injection) and with SuperGen for Nipent(R) (petostatin for injection). It also expanded existing contracts with sanofi-aventis to include Eloxatin(R) (oxaliplatin) and with MGI Pharma to include Dacogen(TM) (decitabine). With these additions, Onmark now offers its members contracts for oncology products from 16 leading pharmaceutical manufacturers, representing the majority of the most widely-used chemotherapy, biologic and supportive care agents, including both brand and generic products. For a listing of all pharmaceutical contracts and the products, services and programs available to Onmark members, visit http://www.onmarkservices.com/. "In the last six months, two large multi-practice oncology groups have selected Onmark for GPO services in recognition of our ability to deliver value to the entire staff within a community oncology practice," added Mr. Avery. "In the current healthcare environment, in which community-based oncologists face changes in reimbursement and shifting standards of care, we are committed to providing our members with contracts, services and tools so they can run their practices as efficiently as possible and focus on delivering high-quality patient care." Broad Portfolio of Educational Programs for Members In addition to competitive national pharmaceutical contracts, aggressive pricing, exclusive discounts and practice optimization tools, Onmark offers business and educational programs designed exclusively for community oncology. So far this year, Onmark has delivered 45 educational programs that have been attended by more than 1,800 of its members. These programs -- offered both in-person and online -- keep members informed of the latest legislative and reimbursement news, clinical advances and best practices in community oncology. They include: -- Monthly teleconferences with updates on the latest legislative news impacting community oncology -- Dinner programs offering insights about the importance of regimen standardization to help improve efficiencies in community oncology practices -- Clinical webcasts reviewing interim clinical trial results presented at ASCO's 2005 Annual Meeting and discussing new advances in the treatment of non-small cell lung cancer -- Interactive forums in key markets to bring together community oncology providers and commercial payors to identify key drivers and best practices for preserving access to quality care -- HR Best Practices webcasts with tips for creating winning HR strategies in community oncology practices -- A quarterly Community Oncology Reimbursement Education (CORE) webcast series that covers reimbursement-related issues that impact community oncology -- Educational teleconferences on guidelines for safe handling of hazardous drugs and sterile preparation techniques, including NIOSH and USP recommendations -- "Preparation Techniques for Hazardous Drugs," a continuing education program to help community oncology practices provide a safer workplace for employees and ensure proper aseptic handling of prepared products for the safety of their patients. This three-part distance learning program includes streaming video, an educational manual and a validation kit and is approved for nursing continuing education credits. More than 35 educational programs are planned for the remainder of 2006. A complete calendar of events is available at http://www.onmarkservices.com/. About OTN OTN, a One Equity Partners portfolio company, is a leading specialty pharmaceutical services company that provides pharmaceuticals, supportive care products and medical/surgical supplies to physicians who practice in the community-based treatment setting. OTN provides physicians and their patients with efficient delivery of medications to treat cancer, as well as rheumatoid arthritis, infertility and other chronic conditions requiring the latest intravenous, injectable and oral medicines. Through its innovative Lynx Technologies, practice management tools and unsurpassed customer service, OTN helps physicians improve practice efficiency while enabling them to focus on providing optimal patient care. Onmark, a group purchasing organization and an OTN company, offers its members competitive contracts for oncology drugs and medical/surgical supplies, practice management tools and educational programs. For more information, please visit http://www.myotn.com/. About Onmark Onmark, an OTN company, is a leading national group purchasing organization (GPO) for community oncology. It is one of the largest GPOs in community oncology, representing approximately $4 billion in annual drug purchases. Onmark focuses on the business of patient care so its members can focus on the care of the patient. Through strategic relationships with OTN, pharmaceutical companies and industry experts, Onmark provides its members with access to a full portfolio of competitive contracts for oncology products and medical/surgical supplies, the most aggressive pricing available through OTN, and practice management resources, clinical tools and educational programs designed exclusively for community oncology. For information about the products, services and programs available to Onmark members, visit http://www.onmarkservices.com/. DATASOURCE: Onmark CONTACT: Monique Weston of Onmark, +1-650-871-2108, or ; or Jani Bergan of WeissComm Partners, +1-415-946-1064, or , for Onmark Web site: http://www.myotn.com/ Web site: http://www.onmarkservices.com/

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