Private Insurance History
While the concept of sharing risk dates back to ancient civilizations, modern private health insurance as we recognize it today—covering medical bills through monthly premiums—truly began in the United States in 1929.
Before this, insurance was primarily “disability” or “accident” coverage meant to replace lost wages, rather than paying for the doctor or hospital.
1. The Baylor University “Blueprint” (1929)
The Great Depression hit hospitals hard because patients couldn’t pay their bills. In 1929, Justin Ford Kimball, an administrator at Baylor University Hospital in Dallas, noticed that many local school teachers were struggling with debt.
The Deal: He offered 1,300 teachers a plan where they paid 50 cents a month in exchange for up to 21 days of hospital care per year.
The Result: This plan was so successful it became the model for Blue Cross, which focused specifically on hospital services.
2. The Rise of Blue Shield (1939)
While Blue Cross covered hospital stays, it didn’t cover the doctors themselves. In 1939, the first Blue Shield plan was founded in California. It was designed to cover “physician services” (the doctors’ fees), completing the modern picture of health insurance.
3. World War II and Employer-Based Coverage
The reason most Americans get insurance through their jobs today is a result of World War II.
Wage Freezes: To prevent inflation during the war, the government froze wages. Companies couldn’t offer raises to attract workers.
The Loophole: In 1943, the IRS ruled that employer-sponsored health insurance was tax-exempt. Companies began offering health plans as a “perk” instead of higher pay, causing private insurance enrollment to explode from 9 million people in 1940 to over 140 million by the 1960s.
History of HMOs
Paul Elwood often called the “father of the HMO,” developed the concept primarily as a way to align financial incentives with patient health outcomes.
Based on his medical background and policy work, several key factors led him to this idea in 1970:
**Shifting from “Sick Care” to “Health Maintenance”: Ellwood noticed that the traditional “fee-for-service” model rewarded doctors for providing more services (like surgery or tests) rather than keeping patients healthy. He believed that if providers were paid a fixed, prepaid amount (capitation), they would have a financial incentive to emphasize preventative medicine and avoid unnecessary, costly procedures.
A Personal Epiphany: While running the Elizabeth Kenny Institute in Minneapolis, Ellwood saw that improvements in medical skill actually hurt the facility’s finances—as clinicians got better and patients recovered faster, the hospital lost money because beds were empty. This irony convinced him that the system was fundamentally flawed.
Addressing Medical Inflation: During the Nixon administration, there was a major push to curb rising medical costs. Ellwood proposed the “Health Maintenance Strategy” as a market-based solution that would use competition among private organizations to lower prices and improve quality without direct government regulation.
Integration of Care: He wanted to combine health insurance and health care delivery into a single “integrated delivery system” (modeled after groups like Kaiser Permanente). This structure was intended to make doctors and hospitals more economical in their use of resources.
In short, Ellwood came up with the HMO to create a “self-regulating” health system where the providers’ goal was to keep the patient healthy at the lowest possible cost, rather than profiting from the volume of illnesses treated.
The 1973 HMO Act fundamentally changed how ancillary services were processed by moving away from fee-for-service (billing for every individual test) toward bundled, prospective payments.
Key Billing Changes
From Volume to Value: Before 1973, providers submitted separate bills for every ancillary service (e.g., a single lab test or X-ray). The Act encouraged capitation, where the HMO received a fixed monthly fee per member to cover all services, including ancillaries.
Standardization: In 1970, the AMA introduced the 5-digit CPT (Current Procedural Terminology) codes we use today. The 1973 Act leveraged these standardized codes to create “basic health service” packages that HMOs were required to provide.
Prospective Risk: Ancillary providers began to share financial risk. Instead of being paid after the service (retrospective), they were paid a set amount upfront (prospective) to manage the patient’s care.
Introduction of Copayments: The Act officially regulated copayments for basic services, ensuring they were nominal so as not to create a barrier to care, while still controlling over-utilization of ancillary tests.
Why Private Pays More
The fundamental reason private insurance companies pay more to hospitals than Medicare is due to how the payment rates are determined for each system.
The final price depends heavily on the relative market power of each party. If a hospital system is dominant or considered essential in a region, they have greater leverage to demand higher prices.
Here’s a breakdown of the key differences:
1. Payment Determination Method
Private Insurance: Rates are set through negotiations between the individual insurance company(payer) and the hospital or health system (provider).
Conversely, a large insurer with a big market share might be able to negotiate more favorable rates.
These negotiated rates are typically higher and vary widely among hospitals and regions.
Medicare: Rates are set by the federal government using a fee schedule and standardized formulas (like the Inpatient Prospective Payment System, or IPPS).
These formulas calculate a flat base payment rate for services, which is adjusted for factors like geographic differences in input costs and case complexity (Diagnosis-Related Groups or DRGs).
Medicare, as the largest single payer in the U.S., has significant power to set these rates, which are generally lower than commercial rates and are often seen as a benchmark.
2. Market Power and Leverage
Medicare’s Leverage: Medicare has immense market power because hospitals rely on treating Medicare beneficiaries to cover a portion of their fixed costs. Hospitals must accept Medicare’s set rates if they want to treat this large population.
Private Insurers’ Leverage: While large private insurers have some negotiating power, they are often dealing with consolidated hospital systems that have strong local market power. If an insurer cannot include a key hospital in its network, its plan becomes less attractive to customers, giving the hospital the upper hand in negotiations.
3. Cost-Shifting (A Debatable Factor)
Hospitals sometimes argue that they need the higher payments from private insurers to cover the shortfall created by lower reimbursement rates from Medicare and Medicaid (which typically pays even less than Medicare).
However, studies suggest that higher private rates are more strongly linked to a hospital’s market power rather than its Medicare/Medicaid patient volume. Hospitals in highly concentrated markets focus on raising prices to private insurers regardless of their reliance on public programs.
In summary, private insurers pay more because they engage in market-based negotiations where the hospital’s power often allows it to secure much higher rates than the fixed, lower rates dictated by the government’s Medicare program.
The question of whether private insurance premiums increased after the Affordable Care Act (ACA) was created is a complex one, as the answer depends on which market you look at and whether you are talking about gross premiums (the total price charged by insurers) or net premiums (what people actually pay after government subsidies).
Here is a breakdown of the trends across different sectors of the insurance market.
1. The Individual Market (Nongroup)
This is where the ACA had its most significant impact. Prior to 2014, insurers in most states could deny coverage for pre-existing conditions or charge sicker people more.
**Initial Spike (2014–2017): When the law was fully implemented in 2014, gross premiums in the individual market rose significantly. Some studies show an average increase of over 100% between 2013 and 2017. This was largely because plans were now required to cover “Essential Health Benefits” (like maternity care and mental health) and could no longer exclude high-risk patients.
Stabilization: After several years of volatility, premiums began to stabilize around 2019 as insurers became better at pricing the “risk pool” of new enrollees.
Impact of Subsidies: For many consumers, these price hikes were offset by federal tax credits. While the sticker price of the plan went up, the out-of-pocket cost for eligible low-to-middle-income individuals often stayed the same or even decreased.
2. The Employer-Sponsored Market
Most Americans get their insurance through an employer. For this group, the ACA’s impact was much more subtle.
Slower Growth Rate: Interestingly, while premiums continued to rise (as they have for decades), they actually grew at a slower rate after the ACA than in the decade before it.
Comparison: From 2000 to 2010, family premiums for employer-sponsored plans rose by about 114%. In the decade following the ACA (2010 to 2020), they rose by about 55%.
Administrative Limits: The ACA introduced the “Medical Loss Ratio” (MLR), which required insurers to spend at least 80–85% of premium dollars on actual healthcare rather than overhead or profit. This acted as a “brake” on how much companies could hike prices to pad profits.
3. Key Drivers of Increases
Several factors contributed to the rising costs after 2010:
New Benefit Requirements: Plans were required to allow children to stay on parents’ plans until age 26 and eliminate lifetime/annual coverage limits.
Guaranteed Issue: Insurers had to accept all applicants regardless of health status, which brought more high-cost patients into the system.
Healthcare Inflation: General medical costs (hospital stays, prescription drugs, and new technologies) continued to rise independently of the law.
Out of Pocket Expenses
Out-of-pocket (OOP) expenses for private insurance have increased significantly over the past 20 years.
Key Trends (2005–2025)
Total Healthcare Costs: For a typical family of four, total annual healthcare costs (including premiums and OOP) nearly tripled from $12,214 in 2005 to $35,119 in 2025.
Deductibles: The average deductible for single coverage has risen sharply. For employer-sponsored plans, the average deductible grew from roughly $580 in 2006 to over $1,800 in 2024.
Out-of-Pocket Maximums: Federal limits on OOP maximums have nearly doubled since being established by the ACA. In 2014, the individual limit was $6,350; by 2024, it reached $9,450.
Impact on Income: Between 2010 and 2020, combined premium and deductible costs rose from 9.1% to 11.6% of the median U.S. household income.