Dr. __________, (Name of the Doctor)
__________, (Name of the Clinic)
__________ (Address of the Clinic)
Date: __/__/____ (date)
Subject: Apology for missing the appointment
Respected sir/ madam,
With due respect, my name is ___________ (name) and I am a resident of _________ (mention residential address/ locality).
I would like to inform you that I have taken an appointment for my treatment of _________ (mention treatment name) at your clinic i.e. ___________ (clinic name) having booking ID number __________ (booking ID number). Respected, I was supposed to visit on __/__/____ (date) for _____________ (mention treatment name). I write this letter to apologize for missing the appointment. The reason behind the same is __________ (mention reason).
Therefore, it is to request you to kindly reschedule the appointment at your clinic.
___________ (Your name),
___________ (Contact details)