Do Google display ads actually work for medical practices?

A plastic surgeon forwarded us a report from an agency last spring. Two million impressions. Forty thousand clicks. A cost per click under a dollar. On paper it looked like the best month of marketing the practice had ever run. Then he asked the only question that matters: "How many of those booked a consult?" Nobody could tell him. When we dug in, the answer was close to zero.

That is the display ad trap in one story. So let us answer the question plainly, because practice owners ask it constantly: do Google display ads work for a medical practice? Usually not for the job most owners hire them for, which is booking new patients. They are brilliant at exactly one thing, and terrible at almost everything else. Here is how to tell the difference.

First, what a display ad actually is

When you run Google search ads, your ad shows at the top of the results the instant someone types "dermatologist near me." That person is looking for a doctor right now. Display ads are different animals entirely. They are the image banners and boxes you see while reading a news story, checking the weather, or playing a game on your phone, served across the Google Display Network, a web of millions of sites and apps.

The difference is intent. Search catches a person in the moment they want care. Display interrupts a person who was thinking about anything but a doctor. That single gap explains everything that follows, including why the cheap clicks almost never turn into patients.

The numbers nobody shows you in the pitch

Display gets sold on its best looking metrics: huge reach and a low cost per click. What gets left out is conversion, the only number tied to actual bookings. According to 2026 Google Ads benchmark data compiled by Store Growers, healthcare display campaigns convert at roughly 0.8 percent, while healthcare search campaigns convert in the 3 to 5 percent range and often higher. Display click through rates run around half a percent, versus 3 to 4.5 percent on search.

Put simply, a search click is several times more likely to become a booked appointment than a display click. Yes, the display click is cheaper. But a cheap click that never books is not cheap, it is just wasted slowly. This is the same pattern we see when practices complain that their Google Ads get clicks but no patients, and display is the worst offender.

Half of your banners are never even seen

Here is the part that should stop any practice owner cold. A banner that loads on a page is not the same as a banner a human actually saw. This is called viewability, and the industry has quietly struggled with it for over a decade. eMarketer pegs average display viewability around 54 percent in 2026, meaning close to half of display impressions are never seen by a real person. Google itself confirmed years ago that more than half the impressions on its own display platforms were not viewable.

So when that report brags about two million impressions, mentally cut it in half before you even start. Then subtract the accidental fat finger taps on mobile banners, the clicks from bots and low quality apps, and the people who saw it for a fraction of a second while scrolling past. What remains, the slice of genuinely interested humans, is tiny. That is why display can look so busy in a dashboard and so empty in the appointment book.

The one job display does brilliantly: retargeting

Now the honest other side, because display is not useless. It has one job it does better than almost any channel, and that job is retargeting, sometimes called remarketing. Retargeting shows your ad only to people who already visited your website and left without booking. These are not cold strangers. They looked you up, read a page, maybe started the booking form, then got pulled away by a kid or a meeting.

For that warm audience, a gentle banner reminder works, and it works cheaply. Someone who was 80 percent of the way to booking sees your name again two days later and finishes. That is display at its best: not finding new patients, but recapturing the ones you already attracted and almost lost. If you want the full picture, we broke it down in what retargeting is and whether a medical practice needs it.

Two honest cautions even here. Retargeting only works once you have real website traffic to retarget, so it is a second layer, never the first. And in healthcare you must be careful never to retarget based on sensitive conditions someone looked at, which can feel invasive and can run into privacy rules. Keep it broad and brand level: "the practice you were just looking at," not "the condition you were researching."

When display earns its place

Outside of retargeting, there are a couple of narrow cases where a display layer makes sense:

• High consideration services. A med spa package, a cosmetic procedure, a weight program. People mull these over for weeks, so staying visible while they decide has value. Even here, it supports search and social, it does not replace them.
• A brand new practice or location. When literally nobody in town knows you exist yet, a modest awareness layer can help, as long as you are also running the channels that actually book people.
• Reinforcing a launch. Promoting a new service you are also pushing through search, social and email, so the message shows up in a few places and sticks.

Notice the pattern. In every good use, display is the supporting actor. The moment someone pitches it as your main way to get new patients, or as a standalone "brand awareness" campaign with no search behind it, that is when the budget quietly disappears.

So where should the money go first?

Here is the order we give practices, and it is almost the reverse of how display gets sold. Spend on intent before you spend on interruption.

Start with Google search ads for the high intent queries your patients actually type, pointed at a fast page built to turn that click into a booking. Make sure your website converts, because the best ad in the world dies on a slow or confusing page. Build your free visibility through local SEO and your Google Business Profile so you show up in the map pack without paying per click at all. Only once those are humming, and you have steady traffic worth recapturing, do you add a small display retargeting layer on top.

That sequence, intent first and reminders second, is the backbone of a real patient acquisition system. Display has a seat at that table. It just does not get to sit at the head of it. And if you ever want to know whether a channel is pulling its weight, tie every dollar back to booked patients, not impressions, the way we lay out in how to calculate your marketing ROI.

The bottom line

Do Google display ads work for a medical practice? For finding new patients on their own, almost never, because they interrupt people who were not looking for a doctor, they convert at a fraction of search, and nearly half are never even seen. For reminding warm website visitors to finish booking, they work well and cheaply. So the answer is not yes or no, it is in the right seat. Put your first dollars where the intent already is, prove those channels book patients, and let display do the one quiet job it is genuinely good at. If someone is selling you millions of banner impressions as the main event, count your bookings, not your clicks, and ask the only question that matters.