He is a nationally licensed massage therapist.
My grandmother has a masseur massage her shoulders every week.
マッサージ師 is a more general term for a massage therapist, often associated with Western-style massage, whereas 按摩師 implies traditional Japanese techniques.
Standard kanji spelling for a professional massage therapist.
Mixed kana-kanji spelling; 按摩 is sometimes written with あん摩 to avoid the negative connotation of 按.
Kana-kanji spelling; あんま is a common kana rendering of 按摩.
Compound of 按摩 (あんま, 'massage') + 師 (し, 'master' or 'specialist'). 按摩 is derived from Chinese 按摩 (ànmó).