Yes, SANGER is a Scrabble word!

Letter values in Scrabble US: S 1, A 1, N 1, G 2, E 1, R 1.

Is it a valid word?

SANGER is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

English biochemist who determined the sequence of amino acids in insulin and who invented a technique to determine the genetic sequence of an organism (born in 1918)
United States nurse who campaigned for birth control and planned parenthood; she challenged Gregory Pincus to develop a birth control pill (1883-1966)

Also: frederick sanger, fred sanger, margaret sanger, margaret higgins sanger.