Health Insurances for Individuals in USA

Here is the list of major Health Insurance providers in USA.

(you can request a quote and compare their available insurance plans)

AETNA http://www.aetna.com/members/individuals/index.html 
BLUE CROSS BLUE SHIELD http://www.bcbs.com/coverage/find/plan/  (list of local BCBS companies by state)
UNICARE http://www.unicare.com/home-visitors.html