Insurance Curator Choosing the right health insurance plan can feel overwhelming. With dozens of carriers and hundreds of policy options, it’s easy to get lost in the fine print. That’s why focusing on financial strength and customer ratings is a smart first step.
In this deep-dive, we rank the top 10 health insurance companies in the USA based on their ability to pay claims (financial stability) and how satisfied their members really are. Whether you’re shopping for an individual plan, an employer-sponsored policy, or Medicare supplement coverage, this guide will help you make an informed decision.
Before we jump in, consider picking up a beginner-friendly resource to demystify health insurance jargon: Health Insurance: Explained Like You’re 5 is a top-rated book that breaks down the basics.
Why Financial Strength and Customer Ratings Matter
Health insurance companies must maintain deep reserves to cover millions of claims every year. A carrier with weak financials could struggle to pay for your emergency surgery or ongoing prescription costs. Financial strength ratings from agencies like AM Best, Moody’s, and Standard & Poor’s tell you whether an insurer has the cash to honor its promises.
Customer ratings measure how members feel about claims processing, customer service, network access, and overall value. The J.D. Power U.S. Commercial Member Health Plan Study and the National Committee for Quality Assurance (NCQA) scores are excellent benchmarks.
When you combine high financial strength with strong customer satisfaction, you get a carrier that is both dependable and member-friendly.
The Top 10 Health Insurance Companies in the USA
Below is our curated list, ordered by a composite score of financial stability and customer ratings. We’ve included each company’s AM Best rating (where available) and recent J.D. Power member satisfaction scores.
1. UnitedHealthcare
UnitedHealthcare is the largest health insurer in the country, covering more than 70 million members. It is a division of UnitedHealth Group, which reported over $370 billion in annual revenue.
- Financial Strength: AM Best A+ (Superior)
- Customer Satisfaction: J.D. Power – Above industry average for commercial plans
- Key Strengths: Massive provider network, integrated Optum pharmacy and data analytics, strong telehealth and wellness programs.
UnitedHealthcare consistently earns high marks for financial stability. Its size allows it to negotiate competitive rates, but some members report occasional billing complexities. The company offers a broad range of plans, including HMOs, PPOs, and Medicare Advantage.
2. Kaiser Permanente
Kaiser Permanente operates as both an insurer and a healthcare provider, meaning you receive care in Kaiser-owned hospitals and clinics. This integrated model often leads to higher customer satisfaction and better coordination of care.
- Financial Strength: AM Best A (Excellent)
- Customer Satisfaction: J.D. Power – Highest rank among commercial plans in many regions
- Key Strengths: Seamless member experience, high preventive care scores, strong NCQA ratings.
Kaiser’s model works best if you live in one of its eight coverage regions (California, Colorado, Georgia, Hawaii, Maryland, Oregon, Virginia, Washington, and the District of Columbia). Members consistently praise the simplicity of one-stop care.
3. Anthem (Elevance Health)
Formerly known as Anthem, Inc., the company rebranded as Elevance Health to emphasize its focus on whole health. It operates Blue Cross Blue Shield plans in 14 states.
- Financial Strength: AM Best A (Excellent)
- Customer Satisfaction: J.D. Power – Above average in most markets
- Key Strengths: Extensive Blue Cross network, robust digital tools (Sydney Health app), strong Medicare Advantage options.
Anthem’s financials are rock-solid, with over $150 billion in annual revenue. Members appreciate the wide network access, but some have complained about prior authorization delays. For a deeper look at market share, read our analysis of Top 10 Insurance Companies in the Usa Ranked by Market Share.
4. Blue Cross Blue Shield (BCBS)
The Blue Cross Blue Shield Association is a federation of 34 independent companies. Each local BCBS plan sets its own rates and networks, so experiences vary by state.
- Financial Strength: Varies by plan – most are rated A or A+
- Customer Satisfaction: Varies widely; some plans rank highest in their region
- Key Strengths: Brand recognition, strong nonprofit legacy, broad acceptance nationwide.
BCBS plans are often the most stable option in their state. In many areas, they offer the widest network of doctors and hospitals. Member satisfaction depends heavily on the local plan’s management.
5. Cigna
Cigna is a global health service company with over 180 million customer relationships worldwide. In the U.S., it offers employer group plans, individual coverage, and Medicare products.
- Financial Strength: AM Best A (Excellent)
- Customer Satisfaction: J.D. Power – Moderate to above average
- Key Strengths: International coverage, strong behavioral health programs, integrated Evernorth pharmacy services.
Cigna often ranks well for claims processing speed. Its customer service scores have improved in recent years, though some members mention narrow networks in certain regions.
6. Humana
Humana is best known for its Medicare Advantage and Part D prescription drug plans. It is the second-largest Medicare Advantage insurer in the country.
- Financial Strength: AM Best A- (Excellent)
- Customer Satisfaction: J.D. Power – High marks for Medicare plans, average for commercial
- Key Strengths: Excellent Medicare-focused wellness programs, strong customer service for seniors, robust telehealth.
Humana’s financial strength is solid, and its customer ratings among Medicare beneficiaries are consistently among the best. The company also offers innovative programs like “Humana Healthy Options” for value-based care.
7. Aetna (CVS Health)
Aetna, now a subsidiary of CVS Health, combines insurance coverage with a massive pharmacy chain. This gives it unique advantages in managing prescription costs and retail clinic access.
- Financial Strength: AM Best A (Excellent)
- Customer Satisfaction: J.D. Power – Average to above average
- Key Strengths: Integrated CVS MinuteClinic, strong pharmacy benefit management, competitive pricing.
Aetna’s network is broad, and its integration with CVS allows members to fill prescriptions and see a nurse practitioner in one visit. Financial backing from CVS Health adds an extra layer of stability.
8. Centene Corporation
Centene specializes in government-sponsored health plans, including Medicaid, Medicare Advantage, and health insurance marketplace plans under its Ambetter brand.
- Financial Strength: AM Best A- (Excellent)
- Customer Satisfaction: Mixed – some Ambetter plans receive lower J.D. Power scores
- Key Strengths: Focus on underserved populations, broad Medicaid footprint, affordable exchange plans.
Centene has grown rapidly through acquisitions. Its financial strength is good, but member complaints sometimes revolve around limited networks and slower customer service for marketplace plans.
9. Molina Healthcare
Molina Healthcare focuses on Medicaid and Medicare plans, serving more than 5 million members across 19 states.
- Financial Strength: AM Best B++ (Good)
- Customer Satisfaction: Mixed – depends on state operations
- Key Strengths: Deep expertise in government programs, strong community outreach, competitive premiums.
Molina’s financial rating is slightly lower than others on this list, but it remains a stable choice for low-income families. Customer satisfaction varies by state, with some local plans outperforming national averages.
10. Oscar Health
Oscar Health is a tech-forward insurer that offers individual and small-group plans on the ACA marketplace. It was founded in 2012 to bring transparency and digital-first care.
- Financial Strength: Not rated by AM Best (younger carrier)
- Customer Satisfaction: J.D. Power – Below average for its early years, but improving rapidly
- Key Strengths: Intuitive mobile app, free telemedicine, predictable copays, transparent pricing.
Oscar has not yet achieved the financial stability of legacy carriers, but it is backed by substantial venture capital and has shown strong growth. Members appreciate the user-friendly digital experience, though network size may be limited in some areas.
How We Evaluated These Companies
We used a weighted methodology that prioritizes financial strength ratings (60%) and customer satisfaction scores (40%). Financial data came from AM Best reports, while customer satisfaction was sourced from J.D. Power’s 2023–2024 U.S. Commercial Member Health Plan Study and NCQA Health Plan Ratings.
Other factors included:
- Market share and membership size
- Network breadth and provider access
- Complaint ratios (from the National Association of Insurance Commissioners)
- Plan variety (individual, employer, Medicare, Medicaid)
For a complete market share breakdown, see our detailed post: Top 10 Insurance Companies in the Usa Ranked by Market Share.
Recommended Resources to Understand Health Insurance Better
Navigating health insurance can be confusing even after reading this guide. The following books offer deeper insights into how premiums, deductibles, and networks really work. We’ve selected a few with excellent ratings and affordable prices.
Health Insurance: Explained Like You’re 5
Price: $12.79 | Rating: 5.0
Perfect for beginners who want plain-English explanations of copays, coinsurance, and out-of-pocket maximums.
The Price We Pay: What Broke American Health Care—and How to Fix It
Price: $10.61 | Rating: 4.7
A hard-hitting investigation into the true cost of medical care and why insurance premiums keep rising.
Health Insurance 101: The Book Everyone Needs To Understand Health Insurance In The USA
Price: $14.99
A straightforward resource that covers Medicaid, Medicare, employer plans, and ACA marketplace options.
Mastering Life & Health Insurance Exam Prep
Price: $26.99 | Rating: 3.6
Ideal for professionals or students preparing for licensing exams. Includes practice tests and real-world scenarios.
Frequently Asked Questions
1. What is the most financially stable health insurance company?
UnitedHealthcare and Kaiser Permanente consistently earn the highest financial strength ratings from AM Best (A+ and A, respectively). Their massive reserves and diversified revenue streams make them very low-risk.
2. Which health insurer has the best customer satisfaction ratings?
According to J.D. Power, Kaiser Permanente often tops the list for commercial member satisfaction, especially in regions where it operates its own hospitals and clinics. Among Medicare plans, Humana and UnitedHealthcare also score very high.
3. Is a higher financial strength rating always better?
Not necessarily. A company rated A++ by AM Best is extremely safe, but you also need to consider network adequacy, premium costs, and customer service. Balance financial strength with your personal healthcare needs.
4. How can I compare health plans from different insurers?
Start with your state’s health insurance marketplace (HealthCare.gov or state exchange). Use the plan comparison tool to see premiums, deductibles, and out-of-pocket limits. Then check the insurer’s AM Best rating and recent J.D. Power scores.
5. Are Blue Cross Blue Shield plans always the best choice?
BCBS plans are widely accepted and often have strong financial backing. However, local BCBS plans vary in quality. Some rank very high in customer satisfaction, while others lag. Always read member reviews for your specific state plan.
6. Does customer satisfaction affect how quickly claims are paid?
Yes, generally. Insurers with higher satisfaction scores tend to process claims faster and have fewer complaints filed against them. You can check a company’s complaint index at the NAIC website.
7. What should I do if my insurer’s financial rating drops?
If your carrier’s rating falls below A-, consider switching plans during the next open enrollment. A downgrade doesn’t mean immediate failure, but it signals increased risk.
Choosing from the top 10 insurance companies in the USA doesn’t have to be daunting. Focus on financial strength to ensure your claims are paid, and check customer ratings to gauge the real-world experience. Whether you prefer the integrated care of Kaiser Permanente, the scale of UnitedHealthcare, or the local touch of a Blue Cross Blue Shield plan, there is a solid option for every budget and health need.
For even more context on how these carriers stack up against each other in market dominance, don’t miss our companion article on Top 10 Insurance Companies in the Usa Ranked by Market Share.