What is Return on ad spend (ROAS)?
The metric that tells you how many pesos your practice earns for every peso you put into advertising.
Return on ad spend (ROAS) is a metric that measures how much revenue your advertising generates for every peso you put into it. You calculate it by dividing the revenue attributed to your campaigns by your total ad spend; for example, a ROAS of 5 means you earn 5 pesos in revenue for every peso spent on ads. It is a direct read on how profitable your campaigns are on platforms like Meta and Google.
Why it matters to your practice
For a private practice or clinic, the ad budget is limited and every peso counts, so it is not enough to know how many people saw an ad: you need to know whether that spend turns into real patients who book and pay. ROAS lets you compare which campaigns, platforms, or messages bring in higher-value patients and which ones just burn budget, so you can steer your money toward what actually works. In medical marketing this matters even more because treatments vary so widely in value: an ad for a dental cleaning and an ad for orthodontic treatment might cost the same to run, but their return is completely different. Measuring ROAS honestly, backed by tracking your WhatsApp contacts and recording which patients came from which campaign, turns your advertising into a measurable investment instead of a shot in the dark.
Example
A dermatologist in Guadalajara invests 8,000 pesos a month in Meta ads for acne consultations. Those campaigns drive WhatsApp messages that convert into 20 new consultations, and once she adds up the revenue from those visits plus the treatment packages some patients purchased, she attributes 40,000 pesos in revenue to that advertising. Her ROAS is 5 (40,000 divided by 8,000), meaning every peso she put into ads came back as 5 pesos. That confirms it is worth keeping, and even increasing, that budget.
Related service
Analytics & tracking
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