Definition of self-refer in US English:

self-refer

verb

[no object]
  • 1Make an appointment with a medical specialist oneself, rather than being referred by a primary care physician.

    ‘patients may self-refer, though half are referred by their physician’
  • 2US (of a doctor) refer a patient to a medical facility in which one has a financial interest.

    ‘investigators found that the number of tests doctors order jumps the year after they begin to self-refer’