The phrase "and supervised by an" is correct and usable in written English.
It can be used in contexts where you are describing a situation or process that involves oversight or management by a person or entity.
Example: "The project was conducted under strict guidelines and supervised by an experienced manager."
Alternatives: "and overseen by an" or "and managed by an".
Within this structure the rector of a university headed a teaching body, recruited by the state and supervised by an inspectorate, ranging through various grades up to the university council.
Sessions were guided by a neuropsychologist and supervised by an ICU nurse.
This was performed by trained insect collectors and supervised by an entomologist.
7, 11, 34, 35 The exercises will be prescribed, and supervised by an exercise professional, such as a physiotherapist or an exercise physiologist.
The training program for adolescents is performed in the gym and supervised by an exercise physiologist with a maximum attendance of 5 patients/group.
Infection control practitioners from centres with and without experience in prevalence studies were grouped as study teams and supervised by an infection control physician at each centre [ 9, 12].
Hyderabad was a ruled by a princely ruler, the Nizam, and supervised by a British resident, and the Seemandhra region was ruled directly by the British authorities.
It is owned by the city of Genoa, jealously kept in a vault inside Palazzo Tursi, Genoa's City Hall, and supervised by a committee of experts responsible for the violin's maintenance and preservation and for deciding who plays it.
The city attorney and a majority of the Democratic-controlled City Council here, many of whose members have been seeking changes in the police department for years, had favored a consent decree, which would be overseen by an independent monitor and supervised by a federal judge.
Lesions were semi-automatically segmented on each interval image series and supervised by a radiologist.
