Final answer:
Integrated entities including physician's, hospital, home care, and nursing home services are known as Health Systems.
Step-by-step explanation:
Integrated entities that encompass physician's services, hospital services, home care, and nursing home care are best described as Health Systems. These systems are designed to provide a coordinated range of healthcare services which could include nonprofits, private hospitals, and governmental agencies. In contexts like the United States, there has been a trend towards consolidation and formation of these larger systems to improve efficiency and handle the increased demand for healthcare, driven by an aging population and the prevalence of chronic diseases.
In contrast to a fee-for-service model where medical care providers are reimbursed based on individual services provided, Health Maintenance Organizations (HMOs) offer a structure where providers are compensated based on patient enrollment, focusing on preventative care and overall management of patients' health. This is one of the ways in which health systems can manage resources and costs more effectively. However, challenges such as controlling high costs, providing equal access to care, and adverse selection in insurance markets remain ongoing issues within health systems.