What is your inactive patient list actually worth?

Every practice principal has a rough feeling about this. Almost nobody has a number. The feeling is usually somewhere between there is probably something in that list and we really should do something about that, which is not enough to justify anybody's afternoon, so nothing happens.

A number is different. A number gets an afternoon.

What follows is not a benchmark and it is not research. It is arithmetic you can do on your own system, and the only honest thing anyone can offer you, because your list is not like anybody else's.

The four inputs

All four are already in your practice management software.

1. Total patients on file. Everybody in the system, not just this year's actives.
2. The share of them who are overdue. Choose a definition and stick to it. Twelve months past their recall date is the common line; twenty-four months if you want to be conservative about who genuinely counts as lapsed.
3. Average value of a visit. Not your best case, and not a full treatment plan. The realistic average of what one appointment is worth to the practice, including the follow-on work that usually comes with it.
4. Your current recall booking rate. Of the overdue patients you contact today, by whatever means you use, the share that end up in the chair. Most practices have to estimate this one. Estimate it low.

The method

Three steps. Do them in this order, because the order is what stops you fooling yourself.

Step one: the size of the list

Total patients multiplied by the overdue share. That is how many people are sitting in your system, not booked, who once chose you.

Step two: the ceiling, which you will not hit

Overdue patients multiplied by the average value of a visit. This is what the list would be worth if every single one of them came back. Nobody gets this number. It is worth calculating anyway, purely so you can look at it once and then stop thinking about it, because it is the number every agency will quote at you.

Step three: what is actually unclaimed

Take the overdue patients and remove the ones you already get back through your existing recalls. What is left is the part of the list nothing is currently reaching. That is the real target, and it is the only figure of the three that should influence a decision.

The ceiling tells you what to dream about. The unclaimed figure tells you what to do on Monday.

Worked through, with made-up numbers

Illustrative inputs: 2,000 patients on file. 40 per cent of them overdue. AED 800 average value of a visit. A current recall booking rate of 15 per cent.

• Step one. 2,000 patients multiplied by 40 per cent gives 800 overdue patients.
• Step two. 800 patients multiplied by AED 800 gives a ceiling of AED 640,000. Look at it once. Move on.
• Step three. A 15 per cent recall booking rate means 120 of those 800 already come back. That leaves 680 patients nothing is currently reaching, worth AED 544,000 at the same average value.

AED 544,000 is still not a forecast. It is the size of the pool a reactivation system would be working in. What matters next is what share of that pool is realistically recoverable, and that is the number nobody can honestly hand you.

The part where everyone else invents a figure

This is where marketing pages tell you that practices typically recover some specific percentage. Ignore all of them. There is no credible published figure that applies to your list, and the ones that get quoted are either from a different healthcare market with different patient behaviour, or from a single case study, or from nowhere at all.

The defensible approach is to look at a range and decide for yourself which end of it you believe. Continuing the same illustrative example, applied to the 680 unclaimed patients:

• At a 5 per cent recovery rate: 34 patients, AED 27,200.
• At 10 per cent: 68 patients, AED 54,400.
• At 20 per cent: 136 patients, AED 108,800.

Those three rates are chosen to span a plausible range, not because any of them is predicted. What the spread does is answer a more useful question than a forecast would: if only the worst of these happened, would this still have been worth doing? If the answer at the low end is no, the arithmetic has just saved you a project.

The patient reactivation calculator runs exactly this, on your numbers, in your browser. Nothing you type into it is sent anywhere.

Three mistakes to avoid

Using your best case as the average visit value

The temptation is to reach for the value of a large treatment plan, because those exist and they are memorable. They are also rare among returning recall patients. Using a high figure inflates every number downstream and makes a project look better than it is, which is fine until the review meeting six months later.

Forgetting the list is not clean

Some of those patients have moved country, changed number, or died. In a market with as much turnover as the UAE this is not a rounding error. If you have any sense of how much of the list is unreachable, take it off before you start, and if you do not, treat the first month of any reactivation work as the thing that finds out.

Counting the same patient twice

A patient recovered this year is not also available to be recovered next year. Reactivation converts a stock into a flow. It is a one-off release of value from a list that has been building for years, followed by a much smaller ongoing return as new patients lapse. Anyone modelling it as a repeatable annual figure is modelling it wrong.

What to do with the number

If the low end of your range comfortably exceeds what a build would cost, the decision makes itself. If it does not, the honest conclusion is that your list is too small or too well worked already, and the answer is to spend the effort somewhere else. Both are useful outcomes, and either way you now have a figure rather than a feeling.

If you want the mechanics of how a list actually gets worked, that is set out on the dental patient reactivation page, including the parts that go wrong.