Call Tracking in a Medical Practice: How an Agency Made the Invisible Call Channel Measurable and Optimized Online Marketing – Success Story: Orthopedics Center Munich East (OZMO)

Call tracking in a doctor’s office transforms an anonymous call into a measurable conversion that can be attributed by channel, campaign, and keyword. Over a two-month period, the agency Wir-Branden – The Brand Makers for the orthopedic MVZ OZMO 938 patient calls without any gaps. The result was unsettling: Approximately 40 percent of the most important contact channel had previously gone unnoticed. After the setup, tracking increased from 60 to 100 percent; the call rate from paid search was 193 percent higher than that from organic search; and with an appointment rate of 15.6 percent, there was, for the first time, a reliable metric for success over the phone.

• Call Tracking for the Practice Phone: The Initial Challenge at OZMO
• What Is Call Tracking—and How Does It Work in Practice?
• The Solution—Call Tracking Setup in OZMO Medical Practices
• The Data Set: 938 Calls, Fully Analyzed—Using AI
• What Call Tracking Reveals About Campaign Management in a Medical Practice
• Calls as Conversions: What This Means for Availability and Budget
• What These Conversations Reveal About Demand in Day-to-Day Practice Operations
• Is call tracking worth it for medical practices and their agencies?
• Conclusion: Lessons for other practices and healthcare providers

Call Tracking for the Practice Phone: The Initial Challenge at OZMO

The reception desk at OZMO, a medical center specializing in orthopedics with three locations in eastern Munich. For patients, the phone is the quickest way to schedule an appointment. But for analytics, it was a black hole. Only a fraction of these calls showed up in Google Analytics; the rest vanished without a trace from the Marketing Report: no topic, no association with an ad.

If you don’t measure, you can’t manage. And if you can’t control the very channel that generates the most appointments, you’re spending your Google Ads budget blindly. That was the situation when the agency Wir-Branden — The Brand Makers under the leadership of Rik Steinicke launched the project.

Essentially, call tracking assigns incoming calls to their digital source. Using dynamic phone numbers, the system identifies which channel a caller is coming from and turns the phone call into a measurable conversion, just like a form submission. At OZMO, matelso Call Tracking was implemented using Call Scoring AI at OZMO.

Everything was set up in just a few days. A pool of 100 phone numbers served as the technical foundation, while Call Scoring AI handled the content analysis: transcription, summarization, and classification by topic and outcome—all automatically for every call. The calls are tracked as events in GA4 and from there as conversions in Google Ads; the scoring results are also sent to BrandCockpit, the agency’s reporting platform. There, SEO, paid search, and phone calls are tracked side by side for the first time. The analysis has been running continuously since February 1, 2026, and actionable data was available from the very first day.

An analysis only becomes reliable because of its data foundation. All 938 calls from 46 days of data collection between February 1 and March 31, 2026, were evaluated. No sampling, no filtered-out outliers. A complete survey that supports every other claim in this story.

Two months of analysis painted a clear picture. The key metrics, with percentage changes shown for each:

The most telling figure is in the second row. The fact that paid traffic led to nearly three times as many calls as organic traffic is exactly the argument for budget allocation that no one could have substantiated without call tracking.

The topics took us by surprise. The most common ones were recipes, post-surgery care, and scheduling appointments—issues raised by existing patients, not new ones. The channel that the practice had intended for patient acquisition turned out to be, for the most part, a service channel. These genuine questions formed the basis for an editorial plan; the first how-to article based on it went online 26 days after the first tracked call.

For wir-branden, OZMO is the pilot project. The “Calls” tab in the reporting system was developed based on this project and is now a standard module. A rollout to two additional practices is imminent. For industries that rely heavily on the phone, the unmeasured phone channel is usually the biggest blind spot in reporting—and one that can be addressed with manageable effort.