Health Insurance online is available for individuals and family at Royal Sundaram, that gives access to many value added services like cashless treatment at network hospitals, 24 hour helpline and ambulance referral facility.
There is also one extra benefit, They are the first ones who offered co branded credit cards, cashless hospitalization cover when I applied for the health insurance.
http://www.royalsundaram.in/Health-Insurance.aspx
I will suggest to you to buy a family health insurance policy online from Royal Sundaram. Their product range is fashioned to render additional cover to a varied range of customers for health insurance, travel and car insurance, accident and hospital cover that goes from the common man to business accumulates.