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Integrated service networks (ISNs) combine or coordinate several stages of health care delivery. Economists call them vertically integrated systems. The integration usually includes several stages in the complete chain of services delivery, including physicians and hospitals and long-term care facilities. If the integration includes ownership of practices, hospital bricks and mortar and a health plan (insurance program), or is partnering very closely with a health plan, it is called an integrated delivery system (see entry). The concept of integrated delivery has held great promise for overcoming the problems of poor coordination that plague so much of health care. Inappropriate referrals, medical errors, self-referrals, indiscriminate use of emergency rooms, excessive lengths of hospital stay, unnecessary admissions, and duplication of tests and procedures, all have been attributed in part to poor coordination of care.

The use of the word network implies that the system is not integrated through common ownership and is linked through a number of coordinating mechanisms, such as contracts, information systems, personal relationships, and mutually supportive strategies and values.

The network may be developed for a number of reasons, including improved delivery of care, greater bargaining power with purchasers of care, and the hope of ultimately becoming a health plan and an integrated delivery system. The core membership of an integrated service network is a group of physicians, usually a local IPA, and one or more hospitals and long-term care facilities.

Virtual Integration

Virtual integration is the opposite of common ownership of assets and practices. Three elements are necessary for a functional virtually integrated system:

  • Contracts and agreements covering patient referrals and management
  • An information system that transfers information and tracks events and outcomes
  • Financial incentives that are aligned to support and integrate the activities of the various actors, including patients

One advantage of virtual integration is that each provider maintains its ownership interest and has an incentive to make its portion of the enterprise productive and efficient, while striving to meet the overall goals of the network’s governing body.

If the network is going to undertake risk contracting, such as capitation, it must also have mechanisms that capture actual costs, monitor utilization, disseminate best practices, and motivate system and unit improvements, as well as coordination of patient care. The network must be large enough to have a sufficient patient pool to make risk-taking effective and a data-tracking system to support its underwriting and rate-setting functions.

Governace

Reaching economic decisions that stand up in the marketplace over time is difficult for networked organizations. The interests of primary care physicians, specialists, and hospitals can be at odds with each other. Where there is no executive in charge with the power to hire and fire and no external board of directors to evaluate CEO performance, conflicts are difficult to resolve. Strong physician leadership and good information systems are keys to effective management. Partnerships are not easy to manage, but a network is not even a partnership. There may not be a common bottom line. There has to be a give and take among the bottom lines of all the network members mediated by payment systems and by committee structures that consider key issues and make recommendations that network members must be willing to live with. Key committees must deal with membership and credentialing, revenue allocation among providers, contract negotiation, quality assurance, utilization review, and medical management.

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