Final answer:
According to Medicare guidelines, a nurse practitioner may certify therapy services if allowed by law.
Step-by-step explanation:
Medicare is a federal health insurance program in the United States that provides coverage for individuals aged 65 and older, as well as certain younger individuals with disabilities or specific medical conditions.
According to Medicare guidelines, a nurse practitioner may certify therapy services if allowed by law. This means that if the law in a particular state allows nurse practitioners to certify therapy services, they can do so under Medicare guidelines.