Health and Medical Insurance Carriers

The 1,960 heath and medical insurance carriers offer financial protection against medical expenses by pooling risks and providing coverage for healthcare services in exchange for premium payments. Most Americans have health insurance coverage through private employer-sponsored plans. Individuals may purchase coverage directly from an insurance company or through federal or state marketplaces. Federal and state governments contract with private insurance carriers to offer Medicare (for adults age 65+ and the disabled) and Medicaid (for low-income and disabled individuals) policies.

Underwriting Risk

Profitability for healthcare insurance companies is directly related to an ability to predict, price for, and effectively manage medical costs.

Highly Regulated

The regulatory environment in the health and medical insurance industry is complex and involves a myriad of federal, state, and local requirements that impact operations and profitability.

Oct 5, 2026 - US Employers Bracing for Significant Health Insurance Cost Increases

• Employers and workers are bracing for another painful jump in health insurance costs, with little relief in sight. US employers expect healthcare costs to rise 11.1% in 2027, according to benefits consultant WTW, which would be the largest increase in more than two decades and the fifth straight year of accelerating growth. Workers are already feeling the squeeze: Aon estimates employees with workplace coverage will spend an average of $5,297 on premiums and out-of-pocket costs in 2026, up $388 from last year. Higher hospital prices, greater use of medical services and expensive treatments are driving insurers’ costs higher, with cancer therapies and GLP-1 weight-loss drugs adding particular pressure. As premiums climb, employers are passing some of the increase to workers through larger payroll deductions and cost sharing, while some smaller businesses are finding that health insurance expenses are eating deeply into already thin margins.
• Medical insurers remain under mounting pressure as healthcare costs continue to outpace premium growth. Employer health benefit costs increased 6% year over year in the second quarter of 2026 - roughly double the pace of wage growth - while higher utilization of outpatient services, specialty drugs, and other high-cost treatments has pushed claims expenses higher and compressed insurer margins. In the individual market, the expiration of enhanced Affordable Care Act subsidies contributed to a decline of approximately 2.6 million enrollees between early 2025 and early 2026, and insurers are seeking median premium increases of 14% for 2027 after implementing median increases of 20% for 2026. The combination of rising medical costs, higher premiums, and tighter utilization management has intensified criticism from employers, providers, consumers, and regulators, leaving the industry under growing financial and political pressure.
• Affordable Care Act (ACA) insurers are seeking another round of double-digit premium increases for 2027, driven largely by the expiration of enhanced federal premium subsidies and continued growth in healthcare costs. According to KFF, the median requested rate increase across 77 publicly available ACA filings is 14%, following a median 20% increase in 2026. With reduced subsidies making coverage significantly more expensive, ACA enrollment has fallen to 19.2 million from 22.1 million a year earlier, and actuaries expect healthier consumers to continue dropping coverage, leaving insurers with a smaller and costlier risk pool. Insurers also cite rising hospital and pharmaceutical costs, greater use of medical services, and higher provider reimbursements as reasons for the requested increases. The proposed rates are still subject to regulatory review before being finalized later this year.
• A Commonwealth Fund study found that about 1 in 5 privately insured American adults had doctor-recommended care denied in the past year, either through prior authorization denials before treatment or claims denials after care was received. These denials often led to delayed treatment, worsening health conditions, unexpected medical bills, and medical debt. Among those denied care, 41% reported treatment delays and 28% said their health deteriorated, while nearly 70% of those facing claims denials incurred higher costs and 43% went into debt. Although more than half of appealed denials were at least partially overturned, only about half of affected patients filed appeals. The report argues that inconsistent rules, limited transparency, and complex appeals processes leave patients struggling to access care and recommends changes including stronger consumer protections, expanded appeal rights, and greater public reporting of denial rates.

Industry size & Structure

The typical health and medical insurance carrier industry employs about 587 workers and generates more than $1.4 billion annually.

• The health and medical insurance industry consists of about 1,960 firms that employ over 628,760 workers and generate over $1.5 trillion annually.
• The industry is highly concentrated; the top 50 companies account for 90% of industry revenue.
• Firms that generate more than $100 million annually account for 30.4% of companies and 99.4% of industry revenue.
• Large non-provider-owned carriers include UnitedHealth Group, Humana, CVS Health, Elevance Health, Cigna, and Centene.