Prisma Health Tuomey Hospital is a 283-bed Joint Commission-accredited medical center in Sumter, South Carolina. Skip to content ... Admitting is located at the main entrance lobby and is available to help patients Monday–Friday, 7 a.m.–6 p.m., Saturday, 9 a.m.–6 p.m. and Sunday noon–6 p.m. They can be reached by calling 803-774-9000..