About CoreSource, now Trustmark Health Benefits: Trustmark Health Benefits, Inc. is a leading national health benefit plan administrator with 44 years of industry experience. We are part of the Trustmark family of companies, one of the leaders in benefits for over 100 years. Trustmark Health Benefits serves the needs of over one million members nationwide each year, handling claims of over $2.5 billion in 2018 alone. We are a URAC- -accredited health and wellness services company specializing in self-funded employer groups. Our team provides tailored, transparent, and measurable solutions that help yield long-term cost savings and stabilization for our clients and their members. --- Trustmark Health Benefits, Inc. is a subsidiary of Trustmark Mutual Holding Company, which has subsidiary non-insurance companies and insurance with $2 billion in consolidated assets, serving more than 2 million covered lives and/or plan participants.