He is contributing to the community as an unpaid doctor.

He is working at the hospital as a resident.

My doctor in charge is very excellent.

My mother is interested in traditional Chinese medicine.

She is a witch doctor, playing the role of a doctor while also being a shrine maiden.

He is very excellent as a medical student.

Public health nurses are working to protect the health of the community.

He is famous as a practitioner of Japanese bondage, spreading the techniques of Japanese bondage all over the world.

He is famous as a rope artist.

He was famous as a rope artist, and his skills were recognized by everyone.