An advantage of preferred provider organizations (PPOs) is that:

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The use of PPOs allows insurance companies to keep their premiums low and in turn makes insurance coverage less expensive for the employers. There are usually more physicians from which to choose than from an HMO, but long-term relationships between physician and patient cannot be established easily. Patients still must see their primary physician before being referred to other specialties.

An Advantage of Preferred Provider Organizations (PPOs) Is That