Which of the following criteria is required for qualifying for Medicare home health services?

To qualify for Medicare home health services, it is essential that the patient is under the care of a doctor and is considered homebound. This criterion ensures that the individual requires a specific level of care that can only be adequately delivered in their home environment. Being under the care of a doctor means that the patient's medical condition is regularly monitored and that a plan of care is established to address their needs. Additionally, the requirement for the patient to be homebound indicates that they have difficulty leaving their home due to their health condition, which is a critical factor in determining their eligibility for receiving home health services.

The other options do not align with the qualifying criteria for Medicare home health services. Enrollment in a Medicare Advantage plan is not a prerequisite for receiving home health services; Medicare beneficiaries can qualify regardless of their plan choice as long as they meet the necessary health conditions. Residency in a nursing facility would typically exclude eligibility for home health services, as those services are designed for individuals who are not already receiving care in an institutional setting. Having a chronic illness, while it may impact a person's need for health services, does not alone qualify someone for home health services; the homebound status and doctor involvement are critical components that must also be met.