（病院の）部長、医（局）長
※英国の医療制度NHS (the National Health Service) での呼称。

a consultant
可算名詞

The doctor pictured on a number of today’s front pages posted here is Amged El-Hawrani, a 55-year-old ear, nose and throat consultant, who died on Saturday at Leicester Royal Infirmary. Adil El Tayar, 63, an organ transplant specialist, died on Wednesday at West Middlesex University Hospital in London, it emerged. Both had contracted Covid-19.
https://www.theguardian.com/world/live/2020/mar/30...
レスター・ロイヤル・インファーマリー（病院、診療所）の耳鼻咽喉科の部長であるAmged El-Hawrani医師（55歳）がCOVID-19で亡くなった。

英国や英連邦諸国、アイルランドからのニュースを日本語にするときに注意が必要な単語のひとつ。
逆に、英国式に慣れている人は米国からのニュースを翻訳するときに注意が必要。

Weblio:
https://ejje.weblio.jp/content/consultant
※Eゲイト英和辞典を参照。

ウィキペディア:
https://en.wikipedia.org/wiki/Consultant_(medicine...

In the United Kingdom, Ireland, and parts of the Commonwealth, consultant is the title of a senior hospital-based physician or surgeon who has completed all of his or her specialist training and been placed on the specialist register in their chosen speciality. Their role is entirely distinct from that of general practitioners, or GPs. Consultants accept ultimate responsibility for the care of all the patients referred to them, ...