The hairstyle in which the hair is tied in a high position is called 'Kuwai atama' for the reason that it looks like kuwai (arrowhead), and most doctors adopt this hairstyle in jidaigeki (historical plays), but this is fictional.
髪を結ぶ位置が高いものは形がクワイに似ることから「慈姑頭」と呼び、時代劇の医者は大体この髪形をしているが、これはフィクション。