This section applies to incarcerated individuals in a State correctional facility. Except as provided in paragraph (2) of this subsection, the Secretary shall assess a reasonable fee not to exceed $4 for each visit by an incarcerated individual to a medical unit, physician, dentist, or optometrist for health care services. The Secretary may not assess a fee for health care services that are: required as a part of the intake process; required for an initial physical examination; due to a referral by a nurse or physician’s assistant; provided during a follow–up visit that is initiated by a medical professional from the correctional facility; required for necessary treatment; or initiated by a medical or mental health staff member of the correctional facility. The Secretary shall adopt regulations to implement and collect the fees required by this section.