A company that protects self-insured employer health plans against catastrophic losses is rebranding a preferred provider program.

The Wellesley, Mass.-based U.S. arm of Sun Life Financial Corp., Toronto, is changing the name of its group division stop-loss cost-containment program to SunResources.

The program links employers with preferred vendors for services such as managing chronic conditions and out-of-network charges.

In addition to changing the program name, Sun Life is adding access to the United Resource Networks transplantation program, and it is preparing to add kidney dialysis and congenital heart disease management vendors.

Sun Life also is starting to verify the credentials and track the quality and cost effectiveness of SunResources program vendors, Sun Life says.