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 Does EPO require referral? Post Navigation Previous How do I contact TRICARE by provider?Next What type of plan is Tufts Health Direct? More Stories HEALTH What is the fine for not having health insurance in Wisconsin? InsuNews May 23, 2022 HEALTH When did WPS start selling Medicare supplement plans? InsuNews May 23, 2022 HEALTH Which countries do not have free healthcare? InsuNews May 23, 2022