A few years ago was a driver for the local GP on call service, working till 2.00am in the morning, we would get a call saying mrs Jackson is unwell etc, so we would drive out, this was before satnavs,find the road etc.
One night a DR brought his high powered searchlight with him, and started shining it at peoples doors at 1.30 am,we thought we had the right house, no number etc,unlit path , so i stayed in the car pointing the light up the path, DR knocked on the door, no answer and no number on the door.
A few minutes latter as i was on the radio asking control could they ask the patient to put on the light or come to the door, a police car drove up,and asked what we where doing, i explained and showed our I D ,the copper said they had reports of someone driving up and down in a car shining a light at front doors, and that there was somebody banging on the callers front door, when i asked what number he said the same number as the one who had called the GP,so we all walked up to the house and knocked on the door.
Eventuially she opened the door,her first words where, theres some weirdo outside shining lights in peoples front doors,and he has been banging on my front door asking me if this is number 22 (we all just burst out laughing).
So get some numerals, next time it may be paramedics and youre suffring some life threatening ilness.