Which well known Russian author was also a doctor?

Anton Pavlovich Chekhov (29 January 1860 – 15 July 1904) was a Russian playwright and short-story writer, who is considered to be among the greatest writers of short fiction in history. His career as a playwright produced four classics, and his best short stories are held in high esteem by writers and critics. Along with Henrik Ibsen and August Strindberg, Chekhov is often referred to as one of the three seminal figures in the birth of early modernism in the theatre. Chekhov practiced as a medical doctor throughout most of his literary career: "Medicine is my lawful wife", he once said, "and literature is my mistress."

In 1879, Chekhov completed his schooling and joined his family in Moscow, having gained admission to the medical school at I.M. Sechenov First Moscow State Medical University. In 1884, Chekhov qualified as a physician, which he considered his principal profession though he made little money from it and treated the poor free of charge.