A patient registration card used at clinics/hospitals for check-in; it often contains patient details and appointment/queue information.
新しい病院に行ったら、受付で診察券を作ってもらった。
When I went to the new hospital, they issued me a patient card at reception.
診察券を持っていると受付がスムーズだ。
Check-in goes more smoothly if you have your patient card.
診察券の裏に連絡先を書く欄がある。
There is a section on the back of the patient card to write contact details.