Here are the largest commercial health plans by number of covered lives in each state, according to a report from America's Health Insurance Plans.
Alabama: Blue Cross and Blue Shield of Alabama, Cigna, UnitedHealthcare, US Life, Viva Health
Alaska: Aetna, Moda Health, Premera Blue Cross Blue Shield of Alaska, UnitedHealthcare, US Life
Arizona: Blue Cross and Blue Shield of Arizona, Centene, Cigna, Humana, UnitedHealthcare
Arkansas: Aetna, Arkansas Blue Cross and Blue Shield, Centene, QualChoice, UnitedHealthcare
California: Anthem, Blue Shield of California, Centene, Kaiser Permanente, UnitedHealthcare
Colorado: Aetna, Anthem, Cigna, Kaiser Permanente, UnitedHealthcare
Connecticut: Aetna, Anthem, EmblemHealth, Harvard Pilgrim Health Care, UnitedHealthcare
Delaware: Aetna, Cigna, Highmark, UnitedHealthcare, US Life
Florida: Aetna, Centene, Florida Blue, Molina Healthcare, UnitedHealthcare
Georgia: Aetna, Anthem, Humana, Kaiser Permanente, UnitedHealthcare
Hawaii: Hawaii Medical Assurance Association, HMSA, Kaiser Permanente, UHA, UnitedHealthcare
Idaho: Blue Cross of Idaho, Mountain Health CO-OP, PacificSource, Regence BlueShield, SelectHealth
Illinois: Aetna, Blue Cross and Blue Shield of Illinois (HCSC), Health Alliance Medical Plans, Humana, UnitedHealthcare
Indiana: Anthem, CareSource, Centene, Indiana University Health Plans, UnitedHealthcare
Iowa: Aetna, Medica, Medical Associates Health Plans, UnitedHealthcare, Wellmark Blue Cross and Blue Shield
Kansas: Aetna, Blue Cross and Blue Shield of Kansas, Blue Cross and Blue Shield of Kansas City, Humana, UnitedHealthcare
Kentucky: Anthem, Baptist Health Plan (dissolved Dec. 1, 2018), CareSource, Humana, UnitedHealthcare
Louisiana: Aetna, Blue Cross and Blue Shield of Louisiana, Humana, UnitedHealthcare, Vantage Health Plan
Maine: Aetna, Anthem, Cigna, Community Health Options, Harvard Pilgrim Health Care
Maryland: Aetna, CareFirst, Cigna, Kaiser Permanente, UnitedHealthcare
Massachusetts: AllWays Health Partners, BlueCross BlueShield of Massachusetts, Harvard Pilgrim Health Care, Health New England, Tufts Health Plan
Michigan: Blue Cross and Blue Shield of Michigan, Health Alliance Plan (HAP), Physicians Health Plan, Priority Health, UnitedHealthcare
Minnesota: Blue Cross and Blue Shield of Minnesota, HealthPartners, Medica, PreferredOne, UCare
Mississippi: Blue Cross and Blue Shield of Mississippi, Centene, Cigna, Humana, UnitedHealthcare
Missouri: Aetna, Anthem, Blue Cross and Blue Shield of Kansas City, Cigna, UnitedHealthcare
Montana: BlueCross BlueShield of Montana (HCSC), Cigna, Montana Health CO-OP, PacificSource, Timber Products Manufacturers Trust
Nebraska: Aetna, Blue Cross and Blue Shield of Nebraska, Cigna, Medica, UnitedHealthcare
Nevada: Aetna, Anthem, Hometown Health Plan, Prominence Health Plan, UnitedHealthcare
New Hampshire: Anthem, Centene, Cigna, Harvard Pilgrim Health Care, Tufts Health Plan
New Jersey: Aetna, AmeriHealth, Cigna, Horizon Blue Cross and Blue Shield of New Jersey, UnitedHealthcare
New Mexico: Blue Cross and Blue Shield of New Mexico (HCSC), Molina Healthcare, New
Mexico Health Connections, Presbyterian Health Plan, UnitedHealthcare
New York: Aetna, Anthem, EmblemHealth, Excellus BlueCross BlueShield, UnitedHealthcare
North Carolina: Aetna, BlueCross BlueShield of North Carolina, Cigna, FirstCarolinaCare, UnitedHealthcare
North Dakota: Aetna, Blue Cross and Blue Shield of North Dakota, Medica, Sanford Health Plan, US Life
Ohio: Aetna, Anthem, Humana, Medical Mutual, UnitedHealthcare
Oklahoma: Aetna, Blue Cross and Blue Shield of Oklahoma (HCSC), CommunityCare, GlobalHealth, UnitedHealthcare
Oregon: Kaiser Permanente, Moda Health, PacificSource, Providence Health Plan, Regence BlueCross BlueShield
Pennsylvania: Aetna, Capital BlueCross, Highmark, Independence Blue Cross, UPMC Health Plan
Rhode Island: Blue Cross & Blue Shield of Rhode Island, Cigna, Neighborhood Health Plan of Rhode Island, Tufts Health Plan, UnitedHealthcare
South Carolina: Aetna, BlueCross BlueShield of South Carolina, Cigna, UnitedHealthcare, US Life
South Dakota: Avera, Medica, Sanford Health Plan, UnitedHealthcare, Wellmark Blue Cross and Blue Shield
Tennessee: BlueCross BlueShield of Tennessee, Cigna, Farm Bureau Health Plans, Humana, UnitedHealthcare
Texas: Aetna, Blue Cross and Blue Shield of Texas (HCSC), Humana, Molina Healthcare, UnitedHealthcare
Utah: Aetna, Molina Healthcare, Regence BlueCross BlueShield, SelectHealth, UnitedHealthcare
Vermont: Blue Cross and Blue Shield of Vermont, Cigna, MVP Health Care, New York Life, US Life
Virginia: Aetna, Anthem, CareFirst, Kaiser Permanente, UnitedHealthcare
Washington: Aetna, Kaiser Permanente, Premera BlueCross, Regence BlueShield, UnitedHealthcare
Washington, D.C: Aetna, CareFirst, Cigna, Kaiser Permanente, UnitedHealthcare
West Virginia: Aetna, CareSource, Highmark, The Health Plan, UnitedHealthcare
Wisconsin: Anthem, Dean Health Plan, Humana, UnitedHealthcare, Unity Health Insurance (Quartz)
Wyoming: Aetna, BlueCross BlueShield of Wyoming, Cigna, Timber Products Manufacturers Trust, UnitedHealthcare
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