"Very late to appointments-no apology or reason…"

My father has had three appointments at Haematology outpatients. At each appointment, the doctor was late (30 minutes late on two occasions). There was no apology or reason given for the lateness on any occasion. I suspect many patients understand doctors may be very busy however an apology or reason (even when the lateness is justified) shows respect for the patient’s time. On one occasion, ward staff said that the doctor was often late to outpatient clinic appointments as they came from the ward round which often overran. I suggested that it might be better to avoid making appointments for the first half hour in this case to avoid patients waiting for long periods often for extremely stressful and potentially life-changing diagnoses. Furthermore, if a doctor is going to be more than 10 minutes late, could they not make a quick call to the outpatient staff so they could inform patients? This would reduce the stress of patients wondering whether they have been forgotten or how long they might be waiting (but only take a small amount of the doctors time).