In 2011, Health Shield Friendly Society recorded just 136 formal complaints, with only 26 of those conceded.
It also said 98% of complaints were closed within eight weeks, compared to 51% for the general insurance and pure protection industry as a whole.
Just 10 company-sponsored members had their complaint upheld out of over 100,000 members (19% were upheld in total).
Across the Friendly Society, 53 complaints came from Corporate membership, with 19 from Direct, seven from Direct Plus, five from Flex and 52 complaints generated from Tailored and Essentials schemes.
Jonathan Burton, Chief Executive at Health Shield, commented: "The latest figures demonstrate our dedication to handling all member complaints in an efficient and appropriate manner, as we strive to offer a comprehensive service and product suite to the company-paid market."
Burton added: "Health Shield is extremely pleased with its overall performance in handling complaints, together with the low levels of disputes raised by members in the first place."
