Patient acquisition cost
How much a clinic spends on marketing to gain one new patient who actually attends and pays. It is total acquisition spend for a period divided by the number of new paying patients in the same period.
≈ cac · customer acquisition cost · cost per new patient · acquisition cost
How to calculate it, and why it is not cost per lead
The formula: all acquisition spend for a period (advertising, promotion, agency fees and, if you wish, part of the marketer's salary) divided by the number of new patients who attended and paid for a service in that period. Not the number of enquiries, and not the number of bookings.
Cost per lead and patient acquisition cost are different things. Ads can bring in cheap enquiries, but if the front desk replies hours later, misses calls and booked patients fail to turn up, every paying patient ends up expensive. That gap is exactly where the front desk does its work.
Common mistakes and what to do
- Counting only the ad budget and leaving out other acquisition costs.
- Dividing by everyone booked, including no-shows and cancellations.
- Not knowing which channel a patient came from: without call tracking, UTM tags and the source recorded in the CRM, cost per channel cannot be calculated.
- Trying to cut acquisition cost by cutting ads when the leak is between enquiry and payment.
First check what share of enquiries reaches payment and at which step the rest drop out. Reply faster to the first message, call back missed calls, confirm appointments. Every patient you stop losing at the front desk lowers acquisition cost without any new ad budget. You can gauge the scale of the losses with the loss calculator.