A medical doctor who treats a wide range of common illnesses and provides primary care, as opposed to a specialist.
Please see a general practitioner first.
He practices as a GP, not at a general hospital.
一般医 is a general practitioner who treats a broad range of common conditions, the opposite of a 専門医 who focuses on one narrow field.
Compound of 一般 (general) and 医 (doctor, physician).