Insights / Guide

The first five minutes decide everything.

Most clinics don’t have a lead problem. They have a follow-up problem. Here’s what the research says about response times, and a plan your front desk can start using tomorrow.

8 min readEvery figure linked to its source

The quiet leak

A patient fills in a form at 7:40 pm after seeing your ad. They’re interested right now. By the time someone calls at 11 am the next day, they’ve booked elsewhere, forgotten, or talked themselves out of it. Nobody notices, because a lead that goes cold doesn’t complain. It just disappears from the numbers.

That’s why we treat follow-up as part of marketing, not an afterthought. The fastest way to get more patients from the same ad budget is usually to answer faster.

What the research says

The best-known research on this comes from a study of more than 15,000 web leads and 100,000 call attempts across six companies. Its findings were stark:

100xdrop in the odds of reaching a web lead when you call after 30 minutes instead of within 5. (Lead Response Management Study, InsideSales.com and MIT, 2007, Study PDF)
21xdrop in the odds of qualifying that lead when the call waits 30 minutes instead of 5. (Lead Response Management Study, InsideSales.com and MIT, 2007, Study PDF)

That study looked at businesses in general, not clinics specifically, and it’s from 2007. But the pattern matches what we see in clinics every week: interest fades fast, and the first clinic to call usually gets the booking. The phones tell the same story:

29%of calls to healthcare businesses go unanswered, rising to 36% in specialty care. (Invoca customer platform data, 2021, Invoca)
80%of patients want to be able to schedule appointments anytime from home or on their phone. (Experian Health, State of Patient Access, 2025, Business Wire)
59%of patients missed or cancelled a doctor’s appointment in the past 12 months. (Tebra survey of 1,075 patients, 2023, Business Wire)

Put together: patients want quick, easy access, and a meaningful share of calls and forms never get a timely answer. That gap is where bookings are lost.

A follow-up plan any front desk can run

You don’t need a call center. You need a simple rule everyone knows and a system that reminds them.

  1. Within 5 minutes: call. If there’s no answer, send a short text right away saying who you are and that you’ll try again.
  2. Within the hour: a second call attempt.
  3. Next morning: a call and a text, early, before the day gets busy.
  4. Day 3: one more call, plus a helpful message such as a patient story video or answers to common questions.
  5. Day 7: a final friendly check-in, then move them to a monthly nurture list.

After hours: an automatic text that confirms the enquiry arrived and tells them when they’ll hear from you, with a link to book online if they prefer.

What to say

First call

“Hi Sarah, it’s Mia from Riverside Clinic. You just asked about our neuropathy consult. Have you got two minutes? I’d love to hear what’s going on and find you a time.”

Text after a missed call

“Hi Sarah, Mia here from Riverside Clinic. Just tried to call about your enquiry. When’s a good time to chat? Or book here: [link]”

Keep it warm, short and about them. The goal of the first call is a booked consult, not a sales pitch.

What to measure

  • Median response time from enquiry to first call attempt.
  • Contact rate: the share of leads you actually speak to.
  • Booking rate: the share of contacted leads who book.
  • Show rate: the share of booked patients who turn up.

When a clinic tells us their ads “aren’t working”, one of these four numbers is usually the real answer. Our campaigns send every lead to your team instantly, and Clinic OS shows who still needs a call.

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