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How do you plan a patient recall campaign for your clinic?

Medslots team, Letex Media Co.How we write and check facts

Updated 8 min readFacts checked

Short answer

A patient recall campaign works best as three separate lists, not one: patients with an unfinished treatment plan first, patients due for a check-up next, and lapsed patients last, in smaller batches. Message only patients who consented, space the batches out, and count sent, replied, booked and attended yourself. The 4-week worksheet below turns this into a plan.

Key takeaways

  • Message patients with an unfinished treatment plan first, patients due for a check-up next, and lapsed patients last and in smaller batches.
  • WhatsApp and the DPDP Act both require opt-in consent before a recall message, and every opt-out has to be honoured at once.
  • Spread the list across a few weeks instead of sending it all on day one. A WhatsApp number's messaging limit and quality rating both react to a sudden spike.
  • Measure the campaign with your own sent, replied, booked and attended counts, not a vendor's recovery-rate percentage.

Most recall guides jump straight to message wording. The part that actually decides whether a campaign works, or gets your WhatsApp number into trouble, happens before a single message goes out: who you contact, in what order, with what consent, and how you count what comes back.

Which patients should a recall campaign contact first?

Treat a recall campaign as three separate lists, not one long list of everyone who has not visited lately. Each group has a different reason to hear from you, and a different amount of care needed around consent.

Three groups worth a recall message
GroupHow to find them on your listConsent you needTypical priority
Unfinished treatment planCase notes show a multi-visit plan that stopped partway throughAlready a patient; confirm WhatsApp consent is on the registration formHighest, message first
Due for a check-upLast visit note shows a follow-up date the doctor advised, and it has arrivedSame as above, confirm consent is on fileMedium, message second
LapsedNo visit in longer than the clinic's usual review gap, with no follow-up notedConsent may be old; treat as needing fresh opt-in if in doubtLower, message last and in smaller batches

Most patient recall guides jump straight to the lapsed group and skip the one with the clearest reason to hear from you. A patient whose treatment plan is not finished already has a documented clinical reason for the message, which also sits on much safer ground under the NMC's rule against soliciting than a message to someone who simply has not visited in a while.

Before a name goes on any recall list, confirm two things: the patient's own record shows they agreed to WhatsApp messages, and the message asks nothing more of them than a reply or silence.

A phone number sitting in your appointment book is not, by itself, consent to message a patient again later. The registration form or the front-desk conversation needs to say plainly that the patient is agreeing to WhatsApp messages from the clinic by name.

Before a name goes on the recall list

  • The patient's file shows they agreed to WhatsApp messages from the clinic.

    A tick box or a signed line on the registration form is enough to check later.

  • There is a documented reason to contact them: an unfinished plan or a follow-up the doctor advised.

  • The draft message names no diagnosis, medicine or procedure.

    Family members often see each other's phones.

  • It ends with an easy way to opt out.

For copy-ready message wording that follows these rules, in English and Hinglish, see our guide to WhatsApp recall messages for past patients. This page is about building and pacing the list; that one is about what to say.

How often should recall messages go out?

Send a recall campaign in batches over a few weeks, not as one message to the whole list on day one.

This is not only a tone decision. Every WhatsApp Business Platform number carries a messaging limit, measured over a rolling 24-hour period at the business's whole portfolio level, and that limit only grows once a business has sent enough messages using templates with a high quality rating, per Meta's own messaging-limits documentation (opens in a new tab). Send an entire lapsed-patient list in one day and a clinic can use up a large share of that limit at once; if several recipients ignore, block or report the messages, the quality rating can also drop, which slows down every other WhatsApp message the clinic sends afterward, not only the campaign. Spreading contacts across a campaign's weeks avoids both problems.

How often to message each group
GroupFirst messageIf there is no replyMessage cap
Unfinished treatment planWithin a few days of the missed follow-up dateOne polite reminder after about a weekTwo messages, then a phone call instead
Due for a check-upAround the date the doctor advisedOne reminder after 10 to 14 daysTwo messages, then stop for this cycle
LapsedOnce, sent in a small batchNo automatic follow-up messageOne message, then wait for the next campaign

For the full mechanics of opt-in, quality rating and what counts as spam on the WhatsApp Business Platform, see our guide to WhatsApp broadcast rules for clinics.

Can a recall message include a discount or offer?

Keep a recall message about the follow-up the doctor advised, not a price cut, and it sits on the safer side of two separate sets of rules.

A separate, one-time promotion such as a health camp is a different, broader advertising decision than a recall message to a named list of your own patients, and it needs the same NMC and ASCI scrutiny as any other advertisement your clinic puts out. Mixing the two, an offer sent specifically to old patients to fill slots, is the pattern both rules are aimed at.

How do you measure bookings from the campaign?

Measure a recall campaign the way you would measure any other source of enquiries: count what you sent, what came back, and what it was worth, using your own clinic's numbers.

  • Messages sent. How many patients you actually messaged, by group.
  • Replies received. How many wrote back, whether to book or to opt out.
  • Bookings made. How many replies turned into a slot on the calendar.
  • Patients who attended. Booking and turning up are not the same number.

Some patient-recall guides publish a recovery-rate percentage for the Indian market. We have not found one with a named, dated study behind it, so this page does not repeat those figures, and we would treat any percentage without a source the same way. Your own four numbers, tracked for one campaign, tell you more than someone else's average. For the full monthly tracking method beyond a single campaign, see our guide to clinic metrics to track monthly.

Calculator

Is a recall campaign worth the time?

Type your own numbers. Nothing you type is stored or sent.

Time spent on the campaign

Enter your numbers above to see this.

Bookings needed to break even

Enter your numbers above to see this.

How this is worked out: Bookings needed = (hours spent multiplied by cost per hour) divided by your average fee for a recovered booking, rounded up. Nothing you type here is saved or sent anywhere.

What does a 4-week recall campaign plan look like?

Put the three groups and the pacing above into a simple four-week run, so the campaign is a plan with an end date rather than an open-ended task nobody finishes.

  1. Step 1: Week 1: build the list

    No messages sent yet

    Sort patients into the three groups from your records, and check who has WhatsApp consent on file. Drop anyone without it.
  2. Step 2: Week 2: message the unfinished-treatment group

    Highest priority

    Send the first batch to this group only. Log every reply and booking as it comes in.
  3. Step 3: Week 3: message due-for-check-up, follow up week 2

    Second priority

    Send the first message to this group, plus one polite reminder to week 2's non-repliers.
  4. Step 4: Week 4: message lapsed patients, review the numbers

    Smallest batch

    Send a small batch to the lapsed group, then add up sent, replied, booked and attended for the whole month.

Worksheet

Your 4-week recall campaign plan

Fill one row a week as the campaign runs. Nothing on this sheet is sent anywhere.

Print this page to get the sheet

WeekGroup contactedMessages sentRepliesBookingsNotes
Week 1
Week 2
Week 3
Week 4

Compare the bookings row against your fee for those treatments to see whether the campaign was worth the time, using the calculator above.

If you are still deciding whether a recall campaign is the right place to start, our pillar guide on getting more patients within the rules covers where recalls fit alongside missed calls, reviews and your Google Business Profile.

Want to see what Medslots costs?

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Common questions

Which patients should a clinic recall first?

Start with patients whose treatment plan is not finished, since the doctor already has a documented reason to see them again. Next, message patients due for a check-up the doctor advised. Contact lapsed patients, people who have not returned after their usual review gap, last and in smaller batches, since consent and interest are harder to confirm for this group.

Do I need patient consent before running a recall campaign on WhatsApp?

Yes. WhatsApp's Business Messaging Policy allows a business to message someone only after they gave their number and opted in, and requires every opt-out request to be honoured. The DPDP Act, 2023 separately expects consent that is free, specific, informed and given through a clear action. Checked 17 Sep 2026.

Can a recall message include a discount or offer?

We would not recommend it. The 2002 NMC code, which applies as of 17 Sep 2026, treats soliciting patients directly or indirectly as unethical, and the ASCI code requires any claim in a promotional message to be capable of independent verification. A reminder about care already advised reads very differently from an offer to fill slots. Not legal advice.

How many times should I message a patient before I stop?

One message, and at most one polite follow-up if there is no reply, is a reasonable cap for most clinics. Sending a whole list at once can also use up a large share of your WhatsApp number's rolling messaging limit, so spreading contacts across a campaign's weeks protects both the patient relationship and the number's quality rating.

How do I know if a recall campaign actually worked?

Count it with your own numbers: how many messages were sent, how many patients replied, how many booked, and how many attended. Weigh that against your fee for the recovered bookings. We would not rely on a vendor's recovery-rate percentage, since the ones published for the Indian market carry no named study behind them.

Purane ya due patients ko recall campaign se contact karna sahi hai?

Haan, agar patient ne WhatsApp par messages ke liye pehle se haan bola hai aur unka follow-up doctor ne advise kiya tha. Message me discount ya offer na daalein, aur STOP likhne par turant list se hata dein. Yeh legal advice nahi hai.

Update log

  • : published.