(a) Any person born in this Commonwealth (1) whose birth is registered as illegitimate but who is legitimated by the subsequent marriage of his natural parents, or (2) whose parentage is determined by a court of competent jurisdiction, or (3) who is adopted under the laws of this Commonwealth or of any other state or territory of the United States of America, or (4) whose name is changed by order or decree of a court of competent jurisdiction, may request the department to prepare an amended certificate of birth on the basis of proof of the new status.

(b) The person involved if he has attained majority and is not incompetent, or his parent, guardian or legal representative, shall file an application making such request and shall submit such proof as the Advisory Health Board may by its regulations require.

(c) After the amended certificate is prepared, any information disclosed from the record shall be from the amended certificate; and access to the original certificate of birth and to the documents of proof on which the amended certificate is based shall be authorized only upon request of the person involved if he has attained majority and is not incompetent, or upon request of his parent, guardian or legal representative, or upon order of a court of competent jurisdiction.