Miller-Keystone Blood Center is an independant, not-for-profit 501(c)(3) organization that serves as the only supplier of blood products to 24 hospitals in Berks, Bucks, Carbon, Chester, Lehigh, Luzerne, Montgomery, Northampton, Philadelphia and Schuylkill (PA) and Warren (NJ) counties. Established in 1971, Miller-Keystone Blood Center is an affiliate of Hospital Central Services, Inc.