Section 55 allows the Department and the eligible member of an appeal tribunal to refer a person to a health care professional for medical examination and report, rather than only allowing a referral to a medical practitioner. Such a reference can be made where considered necessary for the purpose of providing the Department with information for use in making a decision on entitlement to benefit or to aid the appeal tribunal’s determination of an appeal and allows the eligible member of an appeal tribunal to specify the description of health care professional to whom a person is to be referred.