- 8 missed calls/day × 40% booking conversion = 3.2 lost appointments/day
- At ₦5,000 per consultation: ₦16,000/day lost
- At ₦15,000 per consultation: ₦48,000/day lost
- Across 22 working days: ₦352,000–₦1,056,000 per month in unrealised revenue
A Monday morning in Lagos Island
Consider a mid-sized private clinic on Lagos Island — the kind with two consulting rooms, a nurse at the front desk, and a single telephone line. By 9am on a Monday, the waiting area has four patients. By 9:30, there are seven. The nurse at the front desk is registering new patients, directing walk-ins to the right room, and managing a doctor who needs a patient file. The phone has rung four times since the clinic opened.
She answered one of those calls. The other three rang out. By 11am, none of those three callers had tried again.
This is not a story about a badly run clinic. This is the standard operating condition for private clinics across Lagos, Abuja, Port Harcourt, and every other Nigerian city where healthcare demand routinely exceeds available attention. The problem is not incompetence. It is physics: one person cannot be in two places at once.
What those calls were worth
A missed call to a clinic is not a missed conversation. It is a missed appointment. The conversion rate from inbound inquiry call to booked appointment varies by clinic type and specialty, but a reasonable estimate for a general practice or specialist clinic is 35–45%. Call it 40% for the purposes of this analysis.
If the clinic misses 8 calls on a busy day — a number consistent with what we hear from clinic operators on the Maraba waitlist — then 3.2 of those would have converted to bookings under normal circumstances. The remaining 4.8 were callers with questions: directions, opening hours, whether a specific doctor is in today. Those calls matter for reputation and patient experience, but they do not directly generate revenue.
The 3.2 lost appointments are where the naira calculation begins.
Running the numbers
Consultation fees at private clinics in Lagos range from roughly ₦5,000 for a basic general practice visit to ₦15,000 or more for specialist consultations. Using these as floor and ceiling:
Low end: 3.2 missed appointments × ₦5,000 = ₦16,000 per day. Across 22 working days in a month: ₦352,000.
High end: 3.2 missed appointments × ₦15,000 = ₦48,000 per day. Across 22 working days: ₦1,056,000.
These numbers are conservative. They do not account for the lifetime value of a patient. A patient who successfully books their first appointment and receives good care will return. They will bring family members. They will recommend the clinic to neighbours. A missed first call is not just one lost appointment — it is the severing of a relationship before it starts.
The secondary costs that don't appear on any ledger
Beyond the direct revenue loss, missed calls create two less obvious problems for Nigerian clinics.
The first is staff stress. When calls go unanswered, the staff who did pick up carry the awareness that they missed others. Healthcare environments are already high-pressure. Adding the mental load of "I should have answered that phone" to a nurse or receptionist who is already managing multiple tasks is a real cost — it shows up in morale, turnover, and the quality of the interactions that do happen.
The second is reputation. In Nigeria, healthcare decisions are heavily word-of-mouth. A potential patient who called your clinic and got no answer does not stay neutral. They go to the next clinic, and when someone asks them about yours, they say: "I tried calling them. Nobody answered." That is the entirety of their experience with your clinic, and it defines how they will describe you to others.
The after-hours dimension
Most clinics in Lagos operate between 8am and 6pm. Some extend to 8pm. Almost none have staff answering calls after 9pm. But medical concerns do not operate on business hours. Patients call at 10pm to ask whether a symptom warrants an emergency visit. They call on Sunday mornings about medication dosage. They call on public holidays because they do not know if the clinic is open.
Every one of those calls, in a clinic without after-hours coverage, rings out. The patient either goes to a hospital, takes care of it themselves, or worries until morning and calls again. The clinic never knows the call happened.
Maraba handles all of these calls. It answers on the first ring, in whichever language the caller uses — English, Hausa, Igbo, or Yoruba. It handles the common queries: opening hours, directions, which doctors are available, whether the clinic handles a specific condition. For anything that requires clinical judgment, it captures the caller's details and flags it for morning review. The clinic owner or duty doctor gets a WhatsApp summary within 60 seconds of the call ending.
What an Maraba deployment looks like for a clinic
A clinic on our Starter plan gets 200 calls per month handled by Maraba — which covers the after-hours and overflow load for most single-location practices. The knowledge base holds information about the clinic's services, doctors, opening hours, location, and pricing. The clinic's staff get a WhatsApp notification after every call with a structured summary: what the caller asked, what Maraba said, whether action is needed.
The setup takes one afternoon. There is no hardware. There is no IVR menu to build. Maraba detects the caller's language automatically and responds accordingly. A caller who starts in Yoruba and switches to English mid-sentence — which is extremely common in Lagos — is handled without friction.
The clinics using Maraba consistently report the same outcome: the calls that were previously falling through — the after-hours queries, the lunch-hour overflow, the calls that came in while the receptionist was registering a patient — are now captured and handled. The revenue loss from those calls stops being invisible.
The arithmetic of inaction
A Starter plan costs ₦20,000 per month. If it recovers even one missed appointment per day at a ₦5,000 consultation fee, the plan pays for itself in four working days. Every additional recovered call after that is margin the clinic was previously giving away.
The question is not whether the clinic can afford Maraba. The question is whether the clinic can afford to keep missing calls.
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