Wisconsin Statutes Regulation and Licensing (Ch. 440 to 480) § 448.51. License required

(1) Except as provided in s. 448.52, no person may practice physical therapy unless the person is licensed as a physical therapist under this subchapter or holds a valid physical therapist compact privilege.

(1e) No person may designate himself or herself as a physical therapist or use or assume the title “physical therapist,” “physiotherapist,” “physical therapy technician,” “licensed physical therapist,” “registered physical therapist,” “master of physical therapy,” “master of science in physical therapy,” or “doctorate in physical therapy,” or append to the person's name the letters “P.T.,” “P.T.T.,” “L.P.T.,” “R.P.T.,” “M.P.T.,” “M.S.P.T.,” or “D.P.T.,” or any other title, letters, or designation that represents or may tend to represent the person as a physical therapist, unless the person is licensed as a physical therapist under this subchapter or holds a valid physical therapist compact privilege.

(1s) No person may designate himself or herself as a physical therapist assistant, use or assume the title “physical therapist assistant,” or append to the person's name the letters “P.T.A.” or any other title, letters, or designation that represents or may tend to represent the person as a physical therapist assistant unless the person is licensed as a physical therapist assistant under this subchapter or holds a valid physical therapist assistant compact privilege.

(2) Except as provided in s. 448.52(2m), no person may claim to render physical therapy or physiotherapy services unless the person is licensed as a physical therapist under this subchapter or holds a valid physical therapist compact privilege.