MemorialCare Acquires OC Blood & Cancer Care Prominent Orange County Physician Group Serving Thousands of Patients with Cancer and Blood Diseases Chooses to Join MemorialCare Medical Group, Expand Access to Local Medical Services News provided by Share this article Share this article ORANGE COUNTY, Calif., Jan. 13, 2021 /PRNewswire/ -- MemorialCare, the largest nonprofit healthcare system headquartered in Orange County, acquired OC Blood & Cancer Care, a prominent, nationally recognized group of board-certified oncologists and hematologists treating cancer and blood diseases in locations in ...