Add patient preferred pharmacy

To add patient preferred pharmacy use add_patient_preferred_pharmacy method.

This method will return 'success' => 'true'

If validation in AthenaHealth API failed, then error will be raised

client.add_patient_preferred_pharmacy(
  practice_id: 195_900,
  department_id: 1,
  patient_id: 1,
  params: {
    clinicalproviderid: 11_242_674
  }
)