Non-medical staff with a medical practitioner's certificate can practice in private hospitals.

What you want to ask is whether the staff of non-medical institutions with medical licenses can practice in private hospitals? Of course. Private hospitals belong to social medical institutions and need to recruit professionals with medical qualifications to engage in diagnosis and treatment activities. Medical personnel with medical practitioners' certificates have the qualification and ability to engage in diagnosis and treatment in medical institutions, so they can engage in diagnosis and treatment in private hospitals.