Who Are The Largest Health Insurance Companies? 
Some of the largest health insurance companies in the country are : 1 -RRB- United Health Group -LRB- United Health One/United Healthcare -RRB- 2 -RRB- Wellpoint -LRB- Anthem -RRB- 3 -RRB- Aetna 4 -RRB- Kaiser 5 -RRB- Humana 6 -RRB- Cigna 7 -RRB- Coventry 8 -RRB- CareFirst One of the big network names is Blue Cross / Blue Shield - Anthem and CareFirst feature this in Virginia and a number of other states . 