An individual is qualified for specialist registration in a recognised specialty in a health profession if the individual—
(a) holds an approved qualification for the specialty; or
(b) holds another qualification the National Board established for the health profession considers to be substantially equivalent, or based on similar competencies, to an approved qualification for the specialty; or
(c) holds a qualification, not referred to in paragraph (a) or (b) , relevant to the specialty and has successfully completed an examination or other assessment required by the National Board for the purpose of registration in the specialty; or
(d) the individual—(i) holds a qualification, not referred to in paragraph (a) or (b) , that under this Law or a corresponding prior Act qualified the individual for specialist registration (however described) in the specialty; and(ii) was previously registered under this Law or the corresponding prior Act on the basis of holding that qualification for the specialty.