Search "medical practice scheduling template" and almost every result is a generic appointment calendar or a booking-software landing page, with a single overbooking tip buried in a blog post: book 10 to 15 percent over capacity. None of them ask whether that percentage should be the same for every slot on the schedule, and a practice whose no-show rate varies enormously by day and time cannot use one number safely.
Brightwell Family Medicine's practice-wide no-show rate is 16.0 percent across 6,140 scheduled visits. Monday 8-9am new-patient slots run 34.0 percent, and Friday 3-5pm established follow-ups run 32.0 percent, both over 16 points above the average. Published research on missed-appointment timing at an academic clinic found the same shape: afternoon and Friday slots missed at meaningfully higher rates than mid-morning ones, 30.7 percent on Friday against 25.0 percent before noon.
A single one-seat overbook on the Friday slot raises expected arrivals from 2.72 to 3.40, an 85.0 percent utilization with a 14.5 percent chance of a short overflow wait. The same one-seat overbook applied to the Tuesday-through-Thursday 9-11am block, at 9.0 percent no-shows, would push the overflow chance to 62.4 percent, turning an occasional wait into a weekly one. The same discipline anchors the capacity model and the client onboarding checklist: read the slot's own number before acting on it. The reactivation ranking in the referral pack runs the identical test against a customer's interval.
No-show Analysis