What is open time in a schedule?
Open time is provider time that is available for patient appointments but has no patient booked into it, whether it was never filled or was freed up by a cancellation. It is the schedule's unsold inventory: every open minute still costs rent and salaries, and once the hour passes, it can never be sold again.
- Open time = available provider time minus booked time, measured per day, provider or block type.
- There are four kinds: never booked, freed by a cancellation, lost to a no-show, and fragments too small for a standard visit.
- Open time percentage = open minutes ÷ available minutes. Track it looking forward (next 7 and 30 days) and backward (last month).
- Open time close to today is the most urgent, and the hardest, to fill.
The four kinds of open time
Lumping all open time together hides where it comes from. Separate it:
- Never booked. Template slots that nobody booked. Usually a demand, template or access problem.
- Freed by cancellation. Slots that were booked and then cancelled. Recoverable if offered quickly. See what is a late cancellation.
- Lost to a no-show. Booked time that went unused because the patient never arrived. Technically "booked" in many reports, but open in practice.
- Fragments. Gaps of 10 or 15 minutes between visits that are too short for any standard visit type. They add up across a week.
Why it matters to an independent practice
Open time is where the template's promise and the day's reality part ways. A practice can have a well-designed appointment template, strong demand and a busy phone, and still run days with several open hours because cancellations were not refilled and calls were missed at the wrong moments.
It is also a forward-looking metric, which makes it unusually useful. No-show rates and collections tell you about last month. Open time on tomorrow's and next week's schedule tells you where to act today.
Open time is also a timing problem. A slot open three weeks from now can be filled by an ordinary recall message. The same slot open tomorrow morning needs a patient who wants an earlier visit, can rearrange their day and hears about it within minutes. The closer the slot, the faster the response has to be, and the more likely it is that a busy front desk simply runs out of time before the hour arrives.
How to measure it
From your schedule export, for each provider and day, you need available hours from the template and the start time, length and status of each appointment. Then calculate:
- Available minutes = provider session time from the template, minus breaks.
- Booked minutes = total length of appointments with an active status (scheduled, confirmed, arrived, completed).
- Open minutes = available minus booked.
- Open time % = open minutes ÷ available minutes.
- Look-ahead views: run it for the next 2 days, next 7 days and next 30 days. Each window calls for a different action.
Example math
Illustrative case: a chiropractic office with one doctor working 32 patient-facing hours a week, using 15-minute visits, has 128 slots a week.
Looking at next week on Monday morning: 104 slots booked, 24 open, so open time is 19%. Of the 24 open slots, 9 are on Friday afternoon, 6 are scattered single slots on Tuesday and Wednesday, and 9 were freed by cancellations logged since Thursday.
Last week, looking back: 8 no-shows and 5 late cancellations that were never refilled, on top of 10 slots never booked. Effective open time was 23 of 128 slots, or 18%.
At an illustrative $65 a visit, 23 open slots a week is about $1,500 a week, or roughly $76,000 over a 51-week year. Recovering even a third of it is meaningful for a single-doctor office. The deeper valuation, including lead-time decay, is in what an empty appointment slot is really worth.
How practices fill it, by time horizon
- Next 30 days: recall and overdue patients. Patients who are due for care can be offered these times well in advance.
- Next 7 days: waitlist and patients wanting an earlier visit. Many will move up if offered a specific time.
- Next 48 hours: short-notice offers to patients who can come quickly, sent as soon as a cancellation lands.
- Today: missed-call callbacks and same-day needs. A patient who called at lunch may take a 3 PM slot if someone reaches them in time.
- Fragments: adjust the template, or allow short visit types like rechecks to fill them.
Common mistakes
- Counting no-show slots as booked. Reports that show a no-show slot as "used" hide open time.
- Looking only backward. Open time is most useful as a forward view of the next week.
- Filling open time by moving other patients. Moving a patient from Thursday to Tuesday fills one gap by opening another. Count net new visits.
- Treating every open slot the same. A 60-minute procedure slot tomorrow is worth more effort than a 15-minute slot three weeks out.
- No owner. If filling open time is everyone's job, it is no one's. Assign it, or automate it.
Open time, detected and offered around the clock
DocsMD finds open time from your schedule export and works it: offering freed-up slots to patients who want an earlier visit, following up missed calls with open times and inviting overdue patients back. Bookings are handed to your front desk to enter, DocsMD Hold blocks can reserve the times in your EHR, and every filled slot is itemized in your weekly report.
Questions
Is open time the same as unused capacity?
Close. Open time usually refers to specific unbooked slots on the schedule. Unused capacity is the broader total, including no-shows and fragments.
What open time percentage is normal?
There is no reliable published benchmark for independent practices. Track your own, by provider and time horizon, and watch the trend.
Should we overbook to reduce open time?
Overbooking trades open time for long waits and walkouts when everyone shows up. Filling open time with patients who want it is usually the better first step.
Does a no-show count as open time?
For measurement, yes. The slot was booked on paper but produced no visit. Count it separately so you can tell booking problems from attendance problems.
How often should we check open time?
Daily for the next two days, weekly for the next 30. Short horizons need fast action; longer ones can be worked through recall.