hoover-ms.mcpsmd.org/ 8810 Postoak Rd Potomac, MD 20854 39.04472000000001 -77.17917 Herbert Hoover MS8810 Postoak RdPotomac,MD 20854 Phone: 301-968-3740 Fax: 301-469-1013 Dr. Yong M. Kim, Principal Staff Directory