In order to carry out the duties under this chapter, in addition to the powers provided in this chapter, in chapter 220 of this title, and in Title 8, the Commissioner and the Board may examine the books, accounts, and papers of health insurers, health care providers, health care facilities, health plans, contracting entities, covered entities, and payers, as defined in section 9418 of this title, and may administer oaths and may issue subpoenas to a person to appear and testify or to produce documents or things.