Insurance is a security against the probable significant losses of finance because of the unexpected calamities. Insurance is mostly a contract within the insured and insurer. Health or medical insurance is the insurance for medical expenses as suggested by the name. Health insurance can help you complete the health trouble without suffering from a large loss of finance. Mostly not every plan of insurance fulfills our needs, we have to research comprehensively before searching for the company and the plans that perfectly fits in our requirements. There is a list of the best insurance companies in the world that will be beneficial for understanding:

1) UnitedHealth Group:
UnitedHealth is a company established in 1977 based in Minnesota, USA. This company ranks sixth in the list of Fortune 500 companies in America. UnitedHealth is offering a detailed reform of health by offering a wide range of plans of health benefit to employees, taking care of the health of senile and old people. UnitedHealth Group is offering services and products by two companies Optum and UnitedHealthcare with an income of about $14 Billion. UnitedHealth is one of the largest provider of insurance and health services across the globe.

2) Allianz:
The most reputed and the largest company as per the Forbes concerning complex measures, located in Munich, Germany. It offers the services of health and life insurance in India by Bajaj Allianz Life Insurance Company and Germany by Allianz Deutschland AG. They declare to process the claims of insurance in 48 hours.

3) BUPA
It is a private healthcare association helping about 30 million consumers through 200 countries. It is headquartered in London. It is a healthcare organization obtaining a maximum part of the healthcare business in several countries like the US and Spain. BUPA entered the business of healthcare insurance by collaborating with local company Max India developing into Max BUPA Health Insurance Limited.

4) AIA
It is the biggest Asian Life Insurance company covering 20 countries in Asia including Singapore, Thailand, New Zealand, India, and China. AIA is covering the plans of all the critical illness like heart diseases and cancer. With the sustaining and quick services, AIA has managed to preserve the market in the health insurance industry.

5) Humana Inc.
One of the biggest healthcare insurance company located in Humana, the United States whose revenue is approximately $60 Billion. Humana is providing the services in fifty states across Asia and Europe.

6) Blue Cross Blue Shield Association
It is the largest medical organization helping about 100 million people in the United States. This company now provides health coverage in various states of the country and has a large number of insurance covered across the globe. They are offering the coverage to federal and state government employees coming under a Federal Employees Health Benefits Program.