Kovai Medical Center And Hospital — Insisting patients to Leave footwear outside doctors room

Hi Sir/Mam,
KCMH is the excellent facilitated hospital there is no doubt in that. Every month I have to come to hospital to have check for my mother, whenever I come have to face most uncomfortable situation is need to leave footwear before entering doctors room. There is no board but nurses are insisting/being harsh us to leave it. My question, it is huge hospital with alots of doctors, nurses, patients and attendees where I can only patient and attendees need to remove but doctors or nurses with their respective footwear's as they are moving around with their same footwearall round the hospital, are they not caring around the gems. If we need to remove slippers before see any patients there is logic but Can you please say the reason why patients or attendees need to remove their footwear unnecessarily in public that too nurses are very harsh to remove