For the purposes of this chapter, an emergency medical services provider shall mean a licensed hospital, as defined in Section 22-21-20, which operates an emergency department. An emergency medical services provider does not include the offices, clinics, surgeries, or treatment facilities of private physicians or dentists. No individual licensed health care provider, including physicians, dentists, nurses, physician assistants, or other health professionals shall be deemed to be an emergency medical services provider under this chapter unless such individual voluntarily assumes responsibility for the custody of the child.