Which type of HMO model includes private practice physicians?

The correct answer is the group model, which typically features a configuration where physicians operate in a partnership or as part of a group practice while still being able to admit patients to the health maintenance organization's (HMO) network. In this model, physicians retain a degree of independence, which allows them to maintain private practice arrangements, even though they are part of the HMO’s structure. This model effectively merges the benefits of working within a cooperative environment while supporting the autonomy of individual practitioners.

Network models and independent practice associates emphasize different organizational structures. The network model involves a collection of independent practices that contract with an HMO, while independent practice associates typically operate independently yet may participate in a shared insurance plan. The staff model consists of physicians who are employed by the HMO directly, eliminating the flexibility of private practice. Each of these structures offers unique advantages and can affect how care is delivered, but they do not encompass the level of private practice autonomy characteristic of the group model.