How Does Us Health Insurance Work? 
US health insurance is provided by large reputable companies that must be licensed in the states where they conduct business . Aetna , Wellpoint and UnitedHealthcare are three of the largest carriers . Experiencedbrokers are often the best source topurchasethe policies from , since they offer unbiased advice and can provide free quotes to multiple companies . When you approach a company directly , you will not be able to properly compare other plans -LRB- without bias and knowledge -RRB- through the company 's representative . 