group model health maintenance organization

group mod·el health main·te·nance or·gan·i·za·tion

(HMO) (grūp mod'ĕl helth mān'tĕ-năns ōr'gă-nī-zā'shŭn)
An HMO that contracts with a single medical practice to be the sole source of care for its subscribers; two types of practice exist under this model: the "captive" group, which is formed by an HMO to serve its subscribers, and the "independent" group, a previously independent practice that subsequently contracts with the HMO.
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Smith, the patient in the Schleier case, was a paid subscriber of the Kaiser Foundation Health Plan, a group model health maintenance organization whose physicians are generally its employees, but that uses the services of consulting physicians.