EPIC’s first and largest client,  Optum, formerly Beaver Medical Group, was founded in 1945 and is a highly respected, large multi-specialty group providing a broad range of services to patients living in San Bernardino and Riverside Counties. At eleven sites, over 170 physicians who encompass 25 specialties deliver award winning primary and secondary care. Optum's long track record of clinical and financial success reflects not only the hard work of its highly qualified physician staff, but also the systems, policies and processes developed by its administrative arm.

It became apparent in 1995 that there were smaller groups in Optum's environment that were in need of the services, systems and expertise that had been developed to support Optum. To provide services to these groups and IPA’s that did not have the scale to develop them internally, Beaver Medical Clinic, Incorporated restructured into Optum and EPIC Management, L.P., a management services organization.

Beginning in 1995, EPIC has provided a comprehensive menu of services to smaller medical groups and IPAs in addition to Optum. As the California market evolves and new insurance products are developed, EPIC remains committed to helping clients master the ever-changing compliance and administrative challenges.