The short version: return on ad spend (ROAS) is simple to calculate for an online store and harder for a medical practice, because the sale happens in your office weeks after the click. With the right tracking it can still be measured, and it is the number that tells you whether Google Ads is growing your practice or only producing clicks.

The formula for practices

For a practice, ROAS depends on three numbers your ad platform cannot see on its own, which are how many leads you get, how many of them become patients, and what a new patient is worth to you.

ROAS = (leads × lead-to-patient rate × average patient value) ÷ ad spend

A worked example

The figures below are hypothetical and are only meant to show the math. The cost per lead comes from LocaliQ’s 2026 healthcare benchmark, and the other two inputs vary widely from one practice to the next.

Change any one input and the result moves a lot. If only 15% of leads become patients, ROAS falls to about 3.4x, which is why front desk follow-up affects your ad results as much as anything we do inside the account.

2026 benchmarks to compare against

Source: LocaliQ Healthcare Search Advertising Benchmarks, based on 3,542 campaigns from October 2024 to September 2025. For a broad reference point, Google’s own economic impact model assumes businesses earn an average of $2 in profit for every $1 spent on Google Ads (Google). That is Google’s assumption rather than a measured benchmark, but it is a useful floor to judge your own numbers against.

How we make ROAS measurable

This is how we approach Google Ads management for practices.

After managing more than $2.75 million in ad spend across Google and Meta, these are the steps we recommend for any practice that wants to see past the form fill and into actual patient revenue:

• Tracking every lead type, including calls from ads, calls from the website, forms, and online bookings, each as its own conversion.
• Connecting leads to outcomes by importing booked or completed consultations back into Google Ads, so the algorithm learns which searches produce patients rather than which produce clicks.
• Agreeing on patient value with your team up front, using a conservative first-year figure.
• Reviewing budget by service and location each month, and moving spend toward the combinations with the best cost per patient.
• Staying inside healthcare ad policies, so campaigns are not limited or disapproved in the middle of a month.

Book a strategy call and we will walk through your current cost per lead and what your ROAS could look like.