Is it permissible for a doctor to prioritize some patients for medical examination over others, whether they are acquaintances, elderly, or coming from distant areas?

Cutting in line is an infringement upon the rights of others. Priority is given to permissible matters, so whoever comes first has more right than whoever comes after them. It is not permissible to bypass someone's turn unless they give permission, or in a case of necessity. Therefore, it is not permissible to prioritize a friend or an elder over those who preceded them simply due to friendship or age, unless the one with priority gives permission, or if they are in an urgent situation that necessitates prioritizing them to avert a greater harm.