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Case study · Google Ads · 5 weeks

Spine Center of Louisiana: spine surgery leads at $6.66 each in the peak week

Spine Center of Louisiana is a spine surgery practice with 5 locations across Louisiana, and in five weeks its Google Ads cost per lead fell from $14.17 to $6.66 in the peak week. We took over a stalled campaign and fixed it without a budget increase, working with one ad group and a website still in the middle of a rebuild.

Cost per lead, week 5 $6.66

April 3 to 9, the peak week: 71 conversions at a 79.8% conversion rate

Baseline $14.17 · 53% lower
MAR 6Intake: bid cap, dead keywords, no extensions
MAR 2012 broader keywords, bid cap to $20
MAR 27Sitelinks, callouts and call extension
APR 3-9Peak week: 71 conversions, 190 calls
The challenge

What we inherited

Spine Center of Louisiana specializes in minimally invasive spinal fusion surgery. The practice needed a Google Ads campaign to produce qualified patient leads in the Baton Rouge market right away, even though its website was in the middle of a rebuild.

The campaign had already launched, with structural problems that choked it from day one. This is what we found on intake.

Daily budget vs. actual spend at intake
$9.11 spent a day on average$67 budget
Intake findingsMarch 6
  1. 01

    Bid cap choking auctions

    A $12 max CPC bid cap was losing 27.65% of impression share to rank, per the Google Ads report. The campaign showed an “Eligible (Limited)” status.

  2. 02

    Narrow keyword set

    Only 12 keywords, all variations of “minimally invasive.” Three exact match keywords were dead on arrival with no local volume.

  3. 03

    No ad extensions

    No sitelinks, no callouts, no call extension, no structured snippets. The ads ran bare with no supporting assets.

  4. 04

    Broken conversion tracking

    Form submission tracking was broken at launch and there was no GHL call import. The only signal was a GA4 phone click event.

  5. 05

    Website mid-rebuild

    All traffic pointed to a single existing page on a site two months from launching its new design. No custom landing page.

  6. 06

    Severe underspend

    A $67 a day budget was spending only $9.11 a day on average. The campaign was crawling when it should have been sprinting.

What we did

Every change, date by date

One ad group, one responsive search ad, one landing page. Every change was deliberate and dated, so each one can be read against the numbers that followed it.

MAR6Weeks 1-2
Campaign intake

Diagnosed the bottleneck: rank, not budget

The $12 max CPC bid cap was strangling the campaign, which was spending $9.11 a day of a $67 daily budget. Three keywords were dead, no ad extensions were running, and expected CTR was scoring “Below average.” The fix list started with the bid cap, because a budget the campaign cannot spend is not the constraint.

MAR20Week 3
Keyword expansion and bid fix

Added 12 broader keywords and raised the bid cap to $20

The keyword set grew beyond “minimally invasive” into “spine surgery,” “back surgery,” “spinal fusion” and surgeon-intent terms. Negative keyword blocks went in across two waves to keep the broader terms clean.

On the responsive search ad, headline #1 was pinned and three keyword-relevant headlines were added.

MAR27Week 4
Ad extension buildout

Deployed 4 sitelinks, 4 callouts and a call extension

Sitelinks for “Our Spine Surgeons” (12.44% CTR), “Patient Reviews” (13.13%), “5 Louisiana Locations” (11.58%) and “Request an Appointment.” The call extension alone generated 36 clicks at a 13.19% CTR.

APR3-9Week 5
Peak performance week

71 conversions. 190 calls. None missed.

An 11.59% CTR, a $6.66 cost per conversion and a 79.8% conversion rate, with no visible competitors in auction insights. Each optimization compounded on the last.

Over five days of the peak week, the practice took 190 phone calls, 118 of them from first-time callers, and did not miss one.

The results

Week by week, the curve tells the story

Drag the slider or pick a week to see click-through rate, cost per lead, conversions and impression share for that stretch of the campaign.

Click-through rate11.59%
Cost per lead$6.66
Conversions71
Impression share
Won 45.1%Lost to rank 9.9%Lost to budget 45.0%

Week 5, April 3 to 9: the peak week. 71 conversions at $6.66 each and a 79.8% conversion rate. Rank loss fell to 9.9%; the remaining limit was budget.

Case study data covers March 6 to April 9, 2026, verified in Google Ads and GHL reporting. Week 1-2 is the baseline across the first two weeks. *Campaign paused during week 4.

Side by side

Baseline vs. peak week

Every metric moved the right way. These are the numbers at peak performance in week 5 against the baseline of weeks 1 and 2, as reported, not averaged across the five weeks.

Cost per lead$14.17$6.6653% lower
Click-through rate3.15%11.59%268% higher
Cost per click$8.50$5.3138% lower
Conversion rate60%79.8%33% higher
MetricWeeks 1-2Week 5Change
Click-through rate3.15%11.59%+268%
Average CPC$8.50$5.31-38%
Cost per lead$14.17$6.66-53%
Conversion rate60%79.78%+33%
Weekly conversions~4.571+1,478%
Impression share lost to rank27.65%9.89%-64%
MVP keyword

One keyword we added changed everything

“back surgeon”

This keyword was not in the original campaign. It went in as a phrase match term during the March 20 expansion. By week 5 it was responsible for 79% of all conversions, pulling 72 clicks from 518 impressions at a 13.90% click-through rate.

The original build targeted how the procedure is described. Patients were searching for who does it.

518Impressions
72Clicks
56Conversions
$6.93CPA
Performance breakdown

Where the leads came from

Most conversions came from mobile devices, the largest share came from Baton Rouge, and the cheapest leads came from smaller towns around it. Every ad extension beat the baseline.

Conversions by device

Mobile carried the campaign. Desktop converted at the lower cost.

  • Mobile45 conv · $7.03
  • Desktop25 conv · $6.07
  • Tablet1 conv · $4.82

Top locations by CPA

Baton Rouge drove 24 conversions at $6.83. Plaquemine came in lowest at $4.00.

  • Plaquemine$4.00 · 5 conv
  • Lafayette$4.41 · 4 conv
  • Prairieville$5.52 · 4 conv
  • Baton Rouge$6.83 · 24 conv
  • Port Vincent$7.94 · 4 conv
  • Central$10.09 · 4 conv

Ad extension CTR

Added March 27. The dark line on each bar marks the 3.15% baseline CTR.

  • Board-Certified16.39% CTR
  • Call extension13.19% CTR · 36 clicks
  • Patient Reviews13.13% CTR · 60 clicks
  • Our Surgeons12.44% CTR · 79 clicks
  • 5 Locations11.58% CTR · 72 clicks
  • Appointments10.51% CTR · 31 clicks
For your practice or business

Five fixes that did not need a bigger budget

The budget stayed at $67 a day throughout. These lessons apply to any account where leads cost too much or the phone is quieter than the ad spend suggests.

Find out whether rank or budget is the real limit

This campaign had a $67 daily budget and spent $9.11 of it, because a $12 bid cap kept the ads out of auctions they could have won. Impression share lost to rank against lost to budget tells you which one is holding you back. Raising a budget that is not being spent changes nothing.

Paying too much for every lead?

Call 631-612-6976, email john@designmemarketing.com or ask for a free Google Ads audit, and we'll show you where your campaign is losing auctions and money.