(a) A person may not practice medical physics without a license in one of the medical physics specialties listed in subsection (b)(1) - (4) of this section.     
      (b) A medical physicist may not practice the following specialties unless a person hold a license for that specialty:      
        (1) Diagnostic Radiological Physics;       
        (2) Medical Health Physics,       
        (3) Medical Nuclear Physics;       
        (4) Therapeutic Radiological Physics.       
     Source Note:        The provisions of this §160.4 adopted to be effective July 7, 2016, 41 TexReg 4819