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Top 25 Group Carriers
Employee Benefit News, in partnership with business intelligence data analytics firm miEdge, lists the top 25 large-group health insurance carriers in the United States. Companies are ranked based on in-force group health insurance premiums as of March 12, 2018.

Premiums used to compile the listing for the following companies are based on Form 5500 Schedule A data submitted to the Department of Labor. As such, groups under 100 lives, government entities and church plans are not required to file. Any disclosure on Schedule C's are not contemplated in these numbers.
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1) Kaiser Permanente
In-force health premium: $18,084,169,841
Headquarters: Oakland, Calif.
CEO: Bernard Tyson
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2) UnitedHealthcare
In-force health premium: $12,762,746,976
Headquarters: Minnetonka, Minn.
CEO: David S. Wichmann
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3) Aetna
In-force health premium: $6,956,966,865
Headquarters: Hartford, Conn.
CEO: Mark Bertolini
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4) Health Care Service Corporation (HCSC)
In-force health premium: $6,949,086,022
Headquarters: Chicago
CEO: Paula Steiner
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5) Anthem
In-force health premium: $5,638,655,205
Headquarters: Indianapolis
CEO: Gail Koziara Boudreaux
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6) Cigna
In-force health premium: $4,103,082,231
Headquarters: Bloomfield, Conn.
CEO: David Cordani
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7) Blue Cross Blue Shield of Massachusetts
In-force health premium: $2,462,220,022
Headquarters: Boston
CEO: Andrew Dreyfus
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8) Blue Shield of California
In-force health premium: $2,326,160,020
Headquarters: San Francisco
CEO: Paul Markovich
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9) Blue Cross Blue Shield of Michigan
In-force health premium: $1,723,657,409
Headquarters: Detroit
CEO: Daniel J. Loepp
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10) Highmark
In-force health premium: $1,680,808,579
Headquarters: Pittsburgh
CEO: David Holmberg
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11) Blue Cross and Blue Shield of Florida
In-force health premium: $1,588,232,786
Headquarters: Jacksonville, Fla.
CEO: Patrick J. Geraghty
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12) Independence Blue Cross
In-force health premium: $1,145,724,980
Headquarters: Philadelphia
CEO: Daniel J. Hilferty
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13) Blue Cross and Blue Shield of Kansas
In-force health premium: $918,486,581
Headquarters: Topeka, Kan.
CEO: Danette Wilson
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14) Harvard Pilgrim Health Care
In-force health premium: $910,695,175
Headquarters: Quincy, Mass.
CEO: Eric H. Schultz
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15) Centene Corporation
In-force health premium: $857,833,736
Headquarters: St. Louis
CEO: Michael F. Neidorff
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16) Humana
In-force health premium: $818,236,385
Headquarters: Louisville, Ky.
CEO: Bruce D. Broussard
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17) CareFirst BlueCross BlueShield
In-force health premium: $811,142,545
Headquarters: Baltimore
CEO: Chet Burrell
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18) Excellus BlueCross BlueShield
In-force health premium: $729,575,205
Headquarters: Rochester, N.Y.
CEO: Christopher C. Booth
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19) HAP
In-force health premium: $668,284,156
Headquarters: Detroit
CEO: Teresa (Terri) L. Kline
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20) Horizon Blue Cross Blue Shield of New Jersey
In-force health premium: $645,695,401
Headquarters: Newark, N.J.
CEO: Kevin P. Conlin
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21) Wellmark Blue Cross and Blue Shield of Iowa
In-force health premium: $616,910,272
Headquarters: Des Moines, Iowa
CEO: John D. Forsyth
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22) BlueCross BlueShield of Tennessee
In-force health premium: $603,625,401
Headquarters: Chattanooga, Tenn.
CEO: J.D. Hickey
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23) Priority Health
In-force health premium: $565,111,771
Headquarters: Grand Rapids, Mich.
CEO: Joan Budden
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24) Premera Blue Cross
In-force health premium: $557,175,636
Headquarters: Mountlake Terrace, Wash.
CEO: Jeff Roe
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25) Tufts Health Plan
In-force health premium: $527,771,316
Headquarters: Watertown, Mass.
CEO: Thomas Croswell