Compare Insurance Companies
Select any two insurers to see a side-by-side comparison of complaint ratios, denial rates, reputation grades, and composite scores — all from NAIC and CMS regulatory data.
According to published National Association of Insurance Commissioners complaint data and the U.S. Centers for Medicare & Medicaid Services Transparency in Coverage Public Use File (PY2025, updated March 2026), PlainInsurer compares more than 1,000 graded insurer records side by side. See our methodology for how each metric is computed.
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Popular Comparisons
Top auto insurance companies by market share compared against each other.
Top-Rated Insurers (A & B Grades)
Highest Complaint Ratios (F Grade)
How PlainInsurer Comparison Works
Complaint Ratio
Complaints normalized by premium volume so large and small companies can be compared fairly. Source: NAIC MCAS 2024.
Denial Rate
Claim denial rates from CMS Transparency in Coverage data for health insurers. Available for companies with federal reporting obligations.
Composite Grade
Letter grade (A–F) combining complaint ratio, denial score, and prior authorization data where available. A is best.