HEALTH Are CoreSource and Trustmark the same? InsuNews May 23, 2022 Are CoreSource and Trustmark the same? CoreSource, Inc. is a subsidiary of Trustmark Mutual Holding Company. See also How do hospitals claim insurance? Post navigation Previous: Is Trustmark part of Cigna?Next: Who owns Trustmark health benefits? More Stories HEALTH Do spouses get TRICARE for Life? InsuNews May 23, 2022 HEALTH How do I verify TRICARE for Life? InsuNews May 23, 2022 HEALTH What is the fine for not having health insurance in Wisconsin? InsuNews May 23, 2022