This is a part of the list of insurance companies based in the United States. These are companies with a strong national or regional presence having insurance as their primary business.

LIST OF HEALTH INSURANCE IN USA
U.S. insurance companies
General insurance
21st Century Insurance
AARP
ACE Limited
Acuity
Elephant.com
Admiral Life Insurance
Aetna
Aetna for life
Affirmative Insurance
Aflac
Alleghany Corporation
Allied Insurance
Alfa
Allstate
American Automobile Association (AAA)
American Family Insurance
American Income Life Insurance Company
American International Group (AIG)
American National Insurance Company
American Strategic Insurance (ASI)
American Tri-Star Insurance Services
Ameritas Life Insurance Company
AMERICUS INSURANCE
Amica Mutual Insurance
Amtrust Financial Services
Andy Insurance
Applied Underwriters
Arbella Insurance Group
Assurity Life Insurance Company
Auto-Owners Insurance
AXA Equitable Life Insurance Company
Azimuth risk solutions
Bankers Life and Casualty Company
Berkshire Hathaway
Blue Advantage
Brotherhood Mutual Insurance Company
CareSource
Central Insurance Companies
Champ VA
Chappell Insurance Services
Chubb Corp
Cigna Health Spring
Cincinnati Insurance Company
Civil Service Employees
CNA Financial
CNO Financial Group
Colonial Life & Accident Insurance Company
Combined Insurance
Commerce Insurance Group
Country Financial
Country-Wide Insurance Company
Delta Dental
Elephant Auto Insurance
Encompass Insurance Company
Erie Insurance Group
Esurance
Evergreen USA RRG
Farmers Insurance Group
Federal Life Insurance Company
Federated Mutual Insurance Company
First Insurance Company of Hawaii
FM Global
GAINSCO
GEICO
General Re
Genworth Financial
Gerber Life Insurance Company
Globe Life And Accident Insurance Company
GMAC Insurance
Gracy Title Company
Grange Mutual Casualty Company
The Guardian Life Insurance Company of America
GuideOne Insurance
Hanover Insurance
The Hartford
HCC Insurance Holdings
Healthy Paws Pet Insurance & Foundation
Hiscox Small Business Insurance
Horace Mann Educators Corporation
Homeowners Choice Property & Casualty Insurance Inc.,
Inaam Abbasi Insurance Company (IAIC)
Infinity Property & Casualty Corporation
Insurance Panda
InsureScan
IntelliQuote Insurance Services
Ironshore
Jackson National Life
John Hancock Insurance
K&K Insurance
Kansas City Life Insurance Company
Kentucky Farm Bureau
Knights of Columbus
Lemonade (insurance)
Liberty Mutual
Lincoln National Corporation
Manhattan Life Insurance Company
Markel Corporation
MassMutual
Mass Health Insurance
MBBS ( Mohtarma Bainzeer Bhutto Shaheed )
Merchants Insurance Group
Mercury Insurance Group
MetLife
MMG Insurance
Modern Woodmen of America
Mutual of Omaha
National Life
Nationwide Mutual Insurance Company
New Jersey Manufacturers Insurance Company
New York Life Insurance Company
The Norfolk & Dedham Group
Northwestern Mutual
Ohio National Financial Services
Omega
OneBeacon
Oxford Health Plans
Pacific Life
Pacificare
PEMCO
Penn Mutual
Philadelphia Contributionship for the Insurance of Houses from Loss by Fire
Philadelphia Insurance Companies
Physicians Mutual
Primerica
Principal Financial Group
Progressive
ProSight Specialty Insurance
Protective Life
Prudential Financial
Pure Insurance
QBE
The Regence Group
Reliance Insurance Company
RLI Corp.
Safe Auto Insurance Company
Safeco
Safeway Insurance Group
Securian Financial Group
Selective Insurance
Sentry Insurance
Shelter Insurance
Southern Aid and Insurance Company
Southern Farm Bureau Life Insurance Company
Standard Insurance Company
State Auto Insurance Company
State Farm Insurance
Stillwater Insurance Group
Sun Life Financial
Symetra
TIAA-CREF
Transamerica Corporation
The Producer’s Group
The Travelers Companies
Tricare
Tricare For Life
TriWest
Trupanion
Unum
USAA
Vantage Health Plan
Veteran Affairs
Wellmed Healthcare Insurance
West Bend Mutual Insurance
West Coast Life
Western & Southern Financial Group
Western Mutual Insurance Group
Westfield Insurance
Westminster American Insurance Company
White Mountains Insurance Group
XL Catlin
Life annuity
Main article: Life annuity
Allstate
American Family Insurance
American Fidelity Assurance
Amica Mutual Insurance
AXA Equitable Life Insurance Company
Bankers Life and Casualty
Conseco
Farmers Insurance Group
Genworth Financial
Horace Mann Educators Corporation
ING Group
Jackson National Life
John Hancock Insurance
Lincoln National Corporation
MetLife
Mutual of Omaha
National Life Group
Nationwide Mutual Insurance Company
New York Life Insurance Company
Ohio National Financial Services Company
Old Mutual
Pacific Life
Primerica
Professional Life and Casualty
Protective Life
Prudential Financial
Securian Financial Group
Standard Insurance Company
State Farm Insurance
Thrivent Financial for Lutherans
TIAA-CREF
Transamerica Corporation
UNIFI Companies
United of Omaha
Western & Southern Financial Group
Health insurance (major medical insurance)
Main articles: Health insurance and Health insurance in the United States
AARP
Aetna
American Family Insurance
American National Insurance
Amerigroup
Anthem Blue Cross and Blue Shield
Blue Cross and Blue Shield Association
CareSource
Cambia Health Solutions
Centene Corporation
Cigna
Coventry Health Care
EmblemHealth
Fortis
Golden Rule Insurance Company
Group Health Cooperative
Group Health Incorporated
Health Net
HealthMarkets
HealthPartners
HealthSpring
Highmark
Horace Mann Educators Corporation
Humana
Independence Blue Cross
Kaiser Permanente
Kaleida Health
LifeWise Health Plan of Oregon
Medica
Medical Mutual of Ohio
Molina Healthcare
Multi-Plan
Premera Blue Cross
Principal Financial Group
Shelter Insurance
State Farm
Thrivent Financial for Lutherans
UnitedHealth Group
Unitrin
Universal American Corporation
WellCare Health Plans
WellPoint
Medicare
Main article: Medicare (United States)
Aetna
American Family Insurance
Baptist Health Plan
Bankers Life and Casualty
CareSource
Conseco
e-TeleQuote Insurance
Fidelis Care
Kaiser Permanente
Mutual of Omaha
Premera Blue Cross
Thrivent Financial for Lutherans
United American Insurance Company
Supplemental insurance
Aflac
Allstate
Assurant
Colonial Life & Accident Insurance Company
Combined Insurance
Conseco
Liberty National Life Insurance Company
Manhattan Life Insurance Company
MEGA Life and Health Insurance
Mutual of Omaha
National Family Care Life
State Farm Insurance
Workers’ Compensation
Main article: Workers’ Compensation
Accident Fund Insurance Company of America
American International Group (AIG)
Amerisafe
AmTrust Financial Services
CompWest Insurance
Cincinnati Financial Corporation
CompSource Mutual
Erie Insurance Group
GUARD Insurance Group
Hanover Insurance
The Hartford
Liberty Mutual
MEMIC
Merchants Insurance Group
Missouri Employers Mutual
Nationwide Mutual Insurance Company
New York State Insurance Fund
The Norfolk & Dedham Group
Penn National Insurance
(Puerto Rico State Insurance Fund)
Sentry Insurance
State Farm Insurance
State Compensation Insurance Fund
Third Coast Underwriters
United Heartland
WellPoint
Zenith Insurance Company
Pet Insurance
Pet Insurance [1]
Embrace Pet Insurance
American Modern Pet Insurance
Armed Forces Insurance
BBVA Compass
Embrace Pet Insurance
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First Citizens Insurance Services
USAA
Hartville Pet Insurance Group
ASPCA Pet Health Insurance
Hartville Pet Health Insurance
Petshealth Care Plan
Premier Pet Insurance
PetPremium Pet Health Insurance
Pet Insured
Healthy Paws Pet Insurance & Foundation
PetFirst Pet Insurance
Pethealth Inc.
24PetWatch
PetPoint
HumaneSolution.com
Vestafy
PetPartners
AKC Pet Insurance
CFA Pet Insurance
Petplan
Pets Best
BB&T
Farmers Insurance
Progressive
Trupanion
VPI/Nationwide
Access America, a brand of Mondial Assistance Group
International Medical Group
Seven Corners, Inc.
Travel Guard
Usa-Assist Worldwide Protection
Aeromedevac
Missionary Travel Association
MediMundi Travel Director
CONCLUSION
There is other numerous health insurance in United States Of America, one thing is very paramount, one should try and get one both for personal coverage and for family coverage as well.