Before the establishment of Naizenshi the Takahashi clan (later, the Hamashima family) and the Azumi clan were in charge of serving foods to the Emperor and both clans were in charge of the director post as 'buzen' and 'Kami' was not put, but later the director post was assigned to the other clans, where the other clans identified themselves as 'Kami.'
内膳司が設置される前から高橋氏（のちの濱島家）・安曇氏が天皇の食膳を担当していたので、両氏が「奉膳」として長官職を担当し、「正」を置かずにいたが、後に、他氏からも長官職が任命されるようになり、その場合、他の氏は「正」を名乗った。