Home health care agencies are Medicare-certified (which means they have met federal minimum requirements). Home health agencies may offer a wide range of services, including physician care, or may just offer a few services, such as basic nursing care. Most home health agencies assemble a care team for the patient based on his or her needs. Because home health agencies are responsible for their personnel, they assume liability for all care. Home health agencies are usually available 24 hours a day, seven days a week.