Across the United States healthcare landscape, delivery systems play a critical role in promoting public health, standardizing care and providing cost-effective services to patients. For those in healthcare roles, understanding the nuances of modern healthcare systems and functions is essential to navigating regulatory, operational and strategic challenges while continuing to support quality care at every level. 

Defining the Healthcare Delivery System 

Before we dive deeper into the architecture of the U.S. healthcare delivery system, it is helpful to start with a basic definition of what these systems entail and the impact they have on patient outcomes. 

What Is the Healthcare Delivery System?

In simple terms, a healthcare delivery system is an interconnected network of providers, payers, regulatory bodies and patients, each playing a distinct role in the care continuum. It is worth noting that a healthcare delivery system is not a single entity but rather a comprehensive framework through which patients receive services. 

The Institute for Healthcare Improvement also centers the U.S. healthcare system around what is known as the “Quintuple Aim,” a framework designed to improve healthcare delivery in the following areas: 

  • Patient experience 
  • Population health 
  • Per-capita healthcare costs 
  • Provider well-being 
  • Health access and equity 

The Four Core Pillars: Financing, Insurance, Delivery and Payment 

So, what are the elements of a system of care? In the United States specifically, the healthcare delivery system has many interdependent components. It is useful to think of each as a pillar supporting the entire system: financing, insurance, delivery, and payment. 

Healthcare Financing and Reimbursement Models

Healthcare financing refers to the ways in which funds are generated for provided services. Sources typically include private insurance companies, government programs, employers, and patients themselves. 

Historically, the United States healthcare system relied primarily on a fee-for-service (FFS) model, in which providers receive payment for each individual service rendered. The system has since shifted toward value-based reimbursement, a model grounded in patient outcomes and quality metrics rather than volume of services billed. 

Types of Healthcare Insurance (Private, Medicare, Medicaid)

For most Americans, health insurance is the primary means by which medical services are covered. According to the 2024 Census, 92% of Americans now carry some form of health insurance, leaving just 8% of the population uninsured. Common types of coverage include: 

  • Private insurance through employer-sponsored plans 
  • Individual marketplace coverage 
  • Medicare (for adults age 65 and older) 
  • Medicaid (for eligible low-income individuals) 

Care Delivery Infrastructure

Wondering what healthcare delivery model provides care to Medicare patients? The care delivery infrastructure serves all patients, including Medicare patients and those without coverage. This infrastructure encompasses the facilities, technologies, workforces, and systems responsible for providing coordinated care across the population. 

Clinical providers and non-clinical roles alike, including healthcare administrators, are integral to this component of the delivery system. Resources and workflows must be carefully managed to ensure efficient, high-quality care at every point of contact. 

Payment and Financing Systems

The healthcare delivery model also relies on payment and financing systems to determine how providers receive reimbursement for the services they render. In addition to fee-for-service arrangements, many providers and organizations use bundled payments, contracted payments, and other reimbursement structures. 

A working knowledge of these healthcare systems and functions is essential for professionals across all roles, particularly when navigating revenue cycle management and financial performance metrics. 

Primary, Secondary and Tertiary Care: Understanding the Levels of the Care Continuum 

We have explored the question, “What are the elements of a system of care?” However, it is equally important to examine the different levels of care within the delivery system. 

The United States healthcare delivery system is organized into distinct levels, each reflecting greater complexity and specialization of medical services. These levels span from primary care through quaternary care and beyond. 

Overview of Primary, Secondary, and Tertiary Care

Most patients move through the care continuum in a fairly predictable progression: 

  • Primary care – This is the first point of contact for most patients and focuses on preventive care and health promotion. It includes family medicine doctors, pediatricians, and other primary care providers. 
  • Secondary care – This involves slightly more specialized medical services, usually after a referral from a primary care provider for a more complex issue or diagnosis. Common examples of secondary care providers include cardiologists and dermatologists. 
  • Tertiary care – In highly complex medical cases, a referral to a tertiary care provider may be necessary. Examples of tertiary care services may include organ transplants, cancer treatment, and other complex procedures. 

Quaternary Care and Highly Specialized Interventional Services

Some patients require further integrated care at the quaternary level. Such services are available only at highly specialized medical centers and teaching hospitals, where providers often focus on experimental treatments and less conventional therapies. 

Regardless of the level of care, providers and administrators benefit from understanding how patients move through the healthcare system. That awareness allows them to deliver more effective, appropriate care at every stage. 

The Role of Long-Term, Post-Acute and Rehabilitative Care Settings

Patient care does not always end at discharge. Many patients rely on long-term, post-acute and rehabilitative care to support their recovery, with common settings including: 

  • Skilled nursing facilities 
  • Long-term acute care hospitals 
  • Rehabilitation centers 

Though outside the primary through quaternary care framework, these settings play a vital role in reducing hospital readmissions and improving long-term patient outcomes. 

Key Stakeholder Entities – Providers, Payers, Purchasers and Regulators 

The United States healthcare delivery system also encompasses a range of stakeholders who shape how care is delivered, how services are priced and how policies are implemented. Key stakeholder groups include: 

  • Providers – These are the medical professionals that deliver services to patients directly. They have a critical responsibility to deliver safe and effective care while meeting certain quality and regulatory standards. 
  • Payers – These include health insurance companies, government-funded programs (like Medicare and Medicaid) and other entities that provide payment to providers in exchange for care/services on behalf of their patients. 
  • Purchasers – This refers to the entities that buy healthcare coverage on behalf of groups or individuals, with employers being the most common purchasers in the United States healthcare system. 
  • Regulatory bodies – These are the entities that set and enforce certain standards for patient safety, healthcare quality and compliance.  

Organizational Models of Healthcare Delivery 

Healthcare organizations today rely on a variety of models of healthcare delivery to optimize care quality and patient outcomes. These models include integrated delivery networks, accountable care organizations, managed care organizations, and shared savings programs. 

Integrated Delivery Networks (IDNs) and Health Systems — Horizontal vs. Vertical Integration

Under IDNs, multiple healthcare organizations operate under a single governance structure. Integration may occur horizontally, when organizations at the same level of care merge, or vertically, when organizations spanning different levels of care join forces. In both cases, the goal is to improve care quality and streamline operational efficiency. 

Accountable Care Organizations (ACOs), Patient-Centered Medical Homes (PCMHs) and Value-Based Care Models

ACOs bring together groups of providers to improve care quality while reducing costs for specific patient populations. Patient-centered medical homes often complement these efforts by emphasizing coordinated, value-based care over the traditional fee-for-service approach.  

CMS Shared Savings Program (MSSP) and Its Impact on ACO Participation

Under the Centers for Medicare and Medicaid Services (CMS) Shared Savings Program, accountable care organizations can share in the savings generated through stronger care coordination and cost management. This incentive structure has encouraged wider adoption of value-based care systems across the country. 

Managed Care Organizations (MCOs) — HMOs, PPOs, POS Plans and EPOs 

MCOs, including HMOs, PPOs, POS plans, and EPOs, aim to control healthcare costs while maintaining consistent access and quality for all patients. They typically achieve this by establishing provider networks, coordinating care, and using negotiated reimbursement rates to help manage spending and utilization. 

Advancing Your Role Within the Healthcare Delivery System — Graduate Education as a Career Catalyst 

As the U.S. healthcare system grows more complex, the demand for knowledgeable, skilled professionals continues to rise. For those looking to deepen their understanding of healthcare delivery systems and functions, Keiser University offers a variety of graduate programs designed to meet that need. 

Why Keiser University’s Healthcare Programs Are Built for Working Professionals

Our programs are designed with working professionals in mind. With online and hybrid learning formats, coursework is structured to accommodate demanding and varied schedules, so you do not have to step away from your career to advance it. 

Explore the Full Healthcare Program Pathway from the BS in Health Services to the DHSc

Keiser University offers programs at every level to match your goals. From our BS in Health Services to our Doctor of Health Science (DHSc) program, you can build the career-ready knowledge needed to navigate the complexities of the modern healthcare delivery system. 

Advance Your Career with Keiser University 

Ready to explore your options? Review this sampling of Keiser University healthcare programs: 

You can visit our graduate school page or contact an admissions counselor to learn more and explore Keiser’s degree programs. Or get your application process for admission started now.