Direct Answer
Hospitals and other health care facilities earn revenue by providing medical services to patients, paid by commercial insurers, Medicare, Medicaid, or patients directly. Profitability depends critically on payer mix (commercial patients reimburse 2-3x Medicare rates), occupancy, and labor costs (50-60% of total operating expenses). Publicly traded hospital companies are evaluated on EBITDA margins and same-facility revenue growth.
Payer Mix: Why Commercial Insurance Matters Most
Hospitals receive vastly different reimbursement depending on the patient's insurance. Commercial insurance (employer-sponsored or ACA marketplace plans) pays the highest rates, often 2.5-4x Medicare rates for similar services. Medicare pays standardized rates set by CMS; most hospitals receive less than cost for Medicare, cross-subsidized by commercial payers. Medicaid pays the lowest rates, often below Medicare. Uninsured patients present the highest bad debt risk.
The commercial-to-government payer mix is the single biggest determinant of hospital profitability. HCA Healthcare, concentrated in high-growth Sun Belt markets with younger, commercially insured populations, consistently achieves higher EBITDA margins than community hospitals in rural or lower-income markets with more Medicaid and Medicare dependence.
The 340B drug program allows eligible safety-net hospitals (serving low-income populations) to purchase outpatient drugs at significant discounts and bill payers at the higher market rate, creating a material revenue stream for qualifying facilities.
Labor Costs: The Primary Margin Driver
Labor is 50-60% of hospital operating expenses, including physicians, nurses, allied health professionals, and support staff. Registered nurses (RNs) are the most critical workforce constraint: nursing shortages have persisted for decades, worsening acutely during and after COVID-19 as many experienced nurses retired or left bedside care.
Contract labor (travel nurses, locum physicians) surged during COVID-19 to fill staffing gaps, with hourly rates 3-5x those of permanent staff. Hospitals that relied heavily on contract labor saw severe margin compression in 2021-2022. Reducing contract labor as a percentage of total nursing hours became the top margin restoration priority for hospital operators in 2022-2024.
Physician employment has grown significantly: hospitals and health systems now employ the majority of US physicians, particularly specialists. Employed physician practices typically lose money at the practice level but drive high-margin inpatient and procedural revenue to the facility.
Volume, Occupancy, and Service Mix
Hospital revenue is a product of volume (inpatient admissions, outpatient visits, ED encounters, surgical cases) and rate (negotiated payer rates and acuity-adjusted case mix). Inpatient admissions have been gradually declining as care shifts outpatient; outpatient revenue has grown correspondingly.
Case mix index (CMI): a measure of the relative complexity and resource intensity of Medicare inpatient admissions. Higher CMI means more complex patients generating higher DRG (Diagnosis Related Group) payments. Hospitals compete for high-CMI service lines (cardiac surgery, neurosurgery, orthopedics) because they generate the highest margins per admission.
Occupancy: inpatient beds occupied as a percentage of licensed beds. High occupancy (above 85%) creates operational pressure and limits ability to respond to surge; low occupancy (below 60%) signals underutilization of fixed cost base. The optimal range varies by hospital type and market.
Major Players: HCA Healthcare, Tenet, UHS
HCA Healthcare (HCA) is the largest US for-profit hospital company, with ~185 hospitals primarily in Sunbelt markets (Florida, Texas, Tennessee). Its scale provides negotiating leverage with payers and suppliers, and its markets have favorable demographics (younger, growing populations with high commercial insurance penetration).
Tenet Healthcare (THC) operates acute care hospitals and a growing ambulatory surgery center (ASC) business through USPI (United Surgical Partners International). The ASC segment provides higher-margin, lower-acuity surgical volume and less exposure to Medicaid and emergency care financial risk.
Universal Health Services (UHS) operates acute care hospitals and behavioral health facilities (inpatient psychiatric and substance use disorder treatment). The behavioral health segment has more stable demand and better payer mix (commercial insurance increasingly covers mental health parity).
Investment Considerations: Government Rate Risk and Consolidation
For-profit hospital companies trade on EBITDA multiples, typically 7-10x forward EBITDA depending on growth profile and leverage. Same-facility revenue growth (organic), EBITDA margin trajectory, and leverage levels are the primary valuation drivers.
Government rate risk is structural: CMS sets annual Medicare inpatient and outpatient payment updates through the IPPS (Inpatient Prospective Payment System) and OPPS rule-making processes. Rate cuts or below-inflation updates directly impact hospital revenues since Medicare represents 40-45% of typical hospital revenue.
Hospital consolidation has been significant: large health systems have acquired community hospitals, creating regional dominance that can support better payer contracting. However, FTC scrutiny of hospital mergers has increased, with several high-profile transactions challenged or blocked in recent years.
FAQ
Why is commercial insurance so much more valuable than Medicare or Medicaid for hospitals?
Commercial insurers (employer health plans, ACA marketplace plans) negotiate rates with hospitals that typically run 200-400% of Medicare rates for comparable services. Medicare pays standardized rates set by CMS that most hospitals accept at a loss, cross-subsidized by commercial payers. Medicaid pays even less than Medicare in most states. This means a patient with commercial insurance may generate 3-4 times the revenue for the same procedure as a Medicare patient, making the commercial-to-government payer mix the single most important determinant of hospital profitability.
What is a hospital's case mix index (CMI)?
The case mix index (CMI) measures the average relative weight of Medicare inpatient cases at a hospital, where each diagnosis-related group (DRG) has a defined weight reflecting its resource intensity. A CMI of 1.5 means the average Medicare admission is 50% more complex and resource-intensive than the national baseline. Higher CMI hospitals earn more per admission. CMI is a key benchmark because high-CMI service lines (cardiac surgery, neurosurgery, complex oncology) are the most profitable and are competed over aggressively by hospital systems.
What drove the margin pressure on hospital companies in 2021-2022?
Hospital margins were severely compressed in 2021-2022 by surging contract labor costs. Nursing shortages (worsened by COVID-19 burnout and retirements) forced hospitals to rely on expensive travel nurses at hourly rates 3-5x permanent staff rates. Simultaneously, COVID-19 patients required more nursing time per patient (high acuity) and disrupted elective surgical volume. Reducing contract labor reliance became the top operational priority for all major hospital operators in 2022-2024, with most successfully reducing exposure by 2023-2024.
How does hospital consolidation affect pricing?
Hospital consolidation allows health systems to negotiate higher rates with commercial insurers by reducing their alternatives in a market. Studies have consistently shown that hospital mergers resulting in near-monopoly in a geographic market are followed by price increases of 10-40% above pre-merger levels. The FTC has increasingly challenged hospital mergers on these grounds, successfully blocking several transactions. From-a-hospital-system perspective, scale creates procurement savings, service line rationalization, and administrative efficiencies that also contribute to profitability.