How many letters does the top answer for “wrote doctor who” have?

The most common answer is davies (6 letters).

Crossword clue: wrote doctor who

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

davies 6 letters wd-fact-v3

English chemist who was a pioneer in electrochemistry and who used it to isolate elements sodium and potassium and bariu

wrote doctor faustus 67% similar → mann

wrote doctor zhivago 67% similar → lean, pasternak, sharif

wrote 1q84 50% similar → murakami

wrote 2666 50% similar → bolano

wrote 4 3 2 1 50% similar → auster

wrote q11368 50% similar → kernighan, ritchie

wrote q13415681 50% similar → hamill

wrote q134773 50% similar → zemeckis