This section applies to: insurers and nonprofit health service plans that provide hospital, medical, or surgical benefits to individuals or groups on an expense-incurred basis under health insurance policies or contracts that are issued or delivered in the State; and health maintenance organizations that provide hospital, medical, or surgical benefits to individuals or groups under contracts that are issued or delivered in the State. An entity subject to this section shall provide coverage for a prosthesis that has been prescribed by a physician for an enrollee or insured who has undergone a mastectomy and has not had breast reconstruction.