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ConceptA tool I would build. Not client work.

No-show and recall manager

A patient cancels at nine and the slot is still empty at ten, while three people on the waitlist would have taken it.

Concept

Not client work
What this is
A tool I would build, drawn to show the idea. Nobody has bought it, and every name on these screens is invented.
For
A clinic with a full agenda and a waitlist kept on paper.
The money
One US study put the mean no-show rate at 18.8%, at $196 a missed visit in 2008 dollars (BMC, 2016 (opens in a new tab)). Use your own rate, not that one.
Belongs to
Health
Drawn
11 Nov 2026 · sheet 4 of 4

Live demo

A slot is cancelled, offered and refilled.

Press play, or step through it. Then cancel any booked appointment yourself and watch who the slot goes to.
Demo Clinic
Week
Waitlist7
Recalls18
Set by the clinic
Reminders
Month report
Lotte VoorbeeldFront desk
AgendaDr. Maes, week 46
Freed this week 4Refilled 3On the waitlist 7Wed 09:07
Mon 9Tue 10Wed 11TodayThu 12Fri 13
Lunch
Anna DemoCheck-up
Bram DummyFirst visit
Hugo ModelFollow-up
Lars MusterNo-show
Iris ProbeFitting
Otto FacsimileFollow-up
Zoë MockFirst visit
Finn PatroonCheck-up
Lies SchetsFitting
Wout ConceptFollow-up
Emma ExampleFirst visit
Stan DummyCheck-up
Roos ProefFollow-up
Pim SampleFitting
Jef VoorbeeldNo-show
Kato TestFollow-up
Sam SpecimenFirst visit
Mona MusterCheck-up
Nina ProefFitting
Marc VoorbeeldFollow-up
Sofie ProefCheck-up

Concept

Week

A cancelled slot is offered to the people on the waitlist it fits, longest waiting first. Slots at risk are outlined and carry a reason.

Demo

Wednesday, 09:07. Three slots this week are not confirmed. Seven people are on the waitlist.

Then try it: press any booked appointment from Wednesday on to cancel it. The week, the people and the waitlist are invented. No message is sent.

The other screens

Reminders and recalls, set by the clinic.

The messages that go out before a visit, and the list of people due a check-up. Stills, with invented data.
  1. Demo Clinic
    Week
    Waitlist6
    Recalls18
    Set by the clinic
    Reminders
    Month report
    Lotte VoorbeeldFront desk
    Set by the clinicReminders
    Send a test to myselfSave
    7 days beforeSent at 09:00EmailText

    Your appointment at Demo Clinic is on Thursday 12 November at 10:30 with Dr. Maes. Need another time? Use this link.

    If they move it, the old slot is freed and offered to the waitlist.

    2 days beforeSent at 10:00Text

    See you Thursday at 10:30? Reply YES to confirm or NO to cancel.

    No reply by 18:00: the slot is marked “not confirmed”, with the reason.

    The morning ofSent at 07:30Text

    Today at 10:30, Demo Clinic, Voorbeeldstraat 1. Running late? Call 09 000 01 00.

    A NO this late still frees the slot. The offer stops 2 hours before it starts.

    When someone answers NO
    Free the slot at once
    Offer it to the waitlist, longest waiting first
    Hold each offer for30 minutes
    Stop offering before the slot starts2 hours
    Who is never messaged
    Asked for no reminders12 people
    Number bounced twice3 people

    They stay on the desk’s call list. Nobody drops out of the agenda because a text failed.

    Concept

    Reminders

    Three messages the clinic writes once, and what happens when someone answers, or does not.

    1 / 2
  2. Demo Clinic
    Week
    Waitlist6
    Recalls18
    Set by the clinic
    Reminders
    Month report
    Lotte VoorbeeldFront desk
    AgendaRecalls
    Search patients
    Recall rules
    Due 18Invited 9Booked 6No reply 3
    Oldest first
    PatientLast visitDue forDue fromInviteState
    Greet Patroon28 Apr · FittingInsole check28 OctText 21 Oct, text 30 OctOn the call list
    Toon Facsimile2 Nov 2025 · Check-upYearly check-up2 NovEmail 26 Oct, text 5 NovNo reply, twice
    Jules Concept5 May · FittingInsole check5 NovText 29 OctBooked Tue 17 Nov
    Marthe Model8 May · FittingInsole check8 NovText 2 NovBooked Mon 16 Nov
    Wim Demo12 May · FittingInsole check12 NovText 4 NovBooked Thu 19 Nov
    Febe Mock14 Nov 2025 · Check-upYearly check-up14 NovGoes out Fri 13 NovInvite planned
    Arne Schets19 May · FittingInsole check19 NovNoneWants no reminders
    Lien Probe20 May · FittingInsole check20 NovText 9 NovInvited
    The recall rules are the clinic’s: an insole check six months after a fitting, a check-up once a year. The software counts the months. It does not decide who needs care.

    Concept

    Recalls

    Who is due a check-up by the clinic’s own rules, who was invited, who booked and who needs a call.

    2 / 2

What it would be worth

A refilled slot is revenue you already had room for.

The practitioner was there, the room was free, the hour was paid for. What it adds up to depends on your own no-show rate, so that is the number to measure first.

18.8%

of appointments were missed on average in one US study, which put the cost of a missed visit at $196 in 2008 dollars.

Source: BMC Health Services Research (opens in a new tab), 2016. A US study, with costs in 2008 dollars. A public figure from another country and another decade. It is not a result of mine and not a forecast for your clinic.

Also public: patients who got a reminder were “25% less likely” to miss their appointment (BMJ Open (opens in a new tab), 2016).

Your empty slots, in euros

Your own rate, from your agenda.

Type your numbers and the sum appears here.

The refill share is your guess until you have measured a month. Your numbers stay in this tab: nothing is saved or sent.

Where the line is

A reason, never a score.

What it does

  • Sends the reminders the clinic wrote, on the days the clinic chose.
  • Marks a slot “not confirmed” and says why: the booking is old, the reminder bounced, nobody answered.
  • Offers a freed slot to the people on the waitlist it fits, longest waiting first.
  • Lists who is due a check-up by the clinic’s own recall rules.
  • Reports slots freed and slots refilled, per month.

What it never does

  • Score a patient, or predict who will not turn up.
  • Overbook on a guess that someone will stay away.
  • Decide who needs care sooner. The waitlist order is time waited, among the people a slot fits.
  • Message someone who asked not to be messaged.

This is scheduling. It handles appointment times and contact details and makes no clinical call, and I don’t market it as a medical device. Messages to patients need their agreement and a way out; how that is recorded is settled with the clinic before anything is sent.

Want this for real?

I would start with a week on your own agenda: your no-show rate, how the waitlist is kept today, and what your reminders say. Then a fixed price.

How I work with clinics