Location of ambulatory care centers in a metropolitan area.

Abstract

A mathematical model is developed for determining the best locations for prepaid group practice or HMO ambulatory care clinics within a metropolitan area. Several possible forms of a function for estimating enrollment are investigated on the basis of available data, and the model is applied to metropolitan Allegheny County in Pennsylvania to determine clinic locations under uncertainty in enrollment estimates, using existing ambulatory care facilities as potential sites. Both fixed and variable costs are considered in the model, which projects the unit cost per plan subscriber with various combinations of constraints and enrollment functions.

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