About AMY L FRIEDENTHAL MD PC. Amy L Friedenthal Md Pc is an internal medicine provider established in Lake Ridge, Virginia specializing in internal medicine. The NPI number of Amy L Friedenthal Md Pc is 1174722664 and was assigned on July 2007. The practitioner's primary taxonomy code is 207R00000X.The provider is registered as an organization and their NPI record was last updated 14 years ago..