empresas aseguradoras sanitarias


two possible definitions acording to acronymfinder.com:


HMO Health Maintenance Organization (I CHOOSE THIS ONE)

HMO Health Management Organization


Similarly, coverage provided to individuals enrolled in

managed care plans, such as health maintenance organizations

(HMOs) under contracts or agreements with the federal

government, does not meet the definition of Medigap insurance

even though some of the coverage may be similar. On the other

hand, an HMO's supplemental insurance product sold to an

individual Medicare beneficiary who is not enrolled under

either an employer plan or a federal contract or agreement,

does qualify as Medigap insurance.

Por otra parte, los cambios producidos en aseguradores y asegurados debido a la competencia también podría haber contribuído al descenso.
http://www.diariomedico.com/ultimas/not100500b.html

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Note added at 2003-11-16 15:05:27 (GMT)
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plan de seguro médico diría yo