Scanning sources…acquiring signal · establishing uplink
0
health_payer entities
0
mapped plan rollup
0
CARC/RARC coverage
54%
of Medicare enrollees (2025)
The Big 5 National Carriers
~161M US medical members concentrated in 5 holding companiesRegulatory Regimes
Which body governs each carrier book and how members appeal decisionsState Department of Insurance
CMS Medicare Advantage & Part D
Medicaid Managed Care
FEHBA (Federal Employees)
International Private Carriers
Vertical Integration
Modern carriers are payer + provider + PBM + data + fintech conglomeratesPayer
UHC commercial book
Provider
Optum Health (250K+ clinicians)
Pharmacy / PBM
OptumRx, Express Scripts, CVS Caremark
Care Delivery
MinuteClinic, HealthHUB, CareMore
Data & Analytics
Optum Insight, Cotiviti, HealthEdge
Financial Services
HSA, FSA, medical cards
Carrier Class Distribution (loaded page)
Active Filters
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Employer-Sponsored Plans
The 282 plans that use these carriers as TPAs
Payer vs. Plan Compare
Who actually bears the risk — the definitive view
Healthcare Market
Upstream market context (NHE, sectors, regulators)
Carriers sourced from entity_subtype=health_payer. Big-5 medical-membership numbers from AIS Health / annual 10-Ks (2024 filings). MA penetration from KFF Medicare Advantage tracker.