Managed Care

IPA models predominate among newer HMOs

If the future can be extrapolated from the recent past, the HMO market will be dominated increasingly by plans of the independent practice association model, according to data from a leading HMO directory. Such plans tend to be of more recent vintage, while staff- and group-model HMOs are older. Here is the national distribution of HMOs by plan type and year of origin.

SOURCE: CALCULATIONS BY MANAGED CARE BASED ON HMO DIRECTORY FROM INTERSTUDY PUBLICATIONS, ST. PAUL, MINN.

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