A US patient walks into a Tijuana consultation room with the surgeon's name memorized, the procedure compared across three doctors, and a price range already settled in her head. She filled out the contact form last Tuesday. The form is not the beginning of the decision. It is the receipt of one.
Most clinic dashboards show that form submission and call it lead generation. The lead generation happened weeks earlier, across surfaces the dashboard cannot see.
Emilio Alcolea's working paper, Zero Click Marketing and the Measurement of Distributed Influence, is now available on SSRN. The argument is deliberately conservative: clicks still matter. They capture demand. They do not capture every place where demand is created. For medical tourism specifically, that gap is where most of the strategic work now lives.
The 30-second summary
Zero Click Marketing is a strategy and measurement framework for environments where exposure, comprehension, recall, and preference are formed without a visit to a brand-owned property. The click can be a consequence of the decision rather than its cause. For Tijuana surgeons serving US patients, this reframes the question from "how many leads did this page generate" to "how is the patient deciding before she reaches our page."
The click is not dead. It is incomplete.
A form submission tells you something real. The patient reached the threshold of trust where she was willing to share contact information. That signal has value.
The problem is click-only attribution, which treats the click as the cause when it is usually a downstream effect of decisions made earlier. By the time a US patient submits a form, she has often watched two to four YouTube videos, compared three to five surgeons by name, read Reddit threads about complications and recovery, asked ChatGPT or Gemini for opinions on the procedure in Mexico, looked at before-and-after photos in multiple places, and verified board certification on a third-party site.
The form is the receipt of the decision. The decision is older.
Why medical tourism is a zero-click category
Medical tourism is high-trust and high-consideration by definition. The patient is crossing a border, choosing a doctor in another country, and accepting an elective procedure with real risks. Cross-border specialty surgery often produces long consideration windows measured in months, not days.
In long windows, click attribution tends to undercount the upstream work. Short attribution windows can miss early exposures that shape a patient's decision months before the consultation. Even longer windows can undercount the cumulative work of trust, familiarity, and third-party validation.
This is what Alcolea's paper calls distributed influence: the patient's decision is built across many surfaces, over weeks or months, before any measurable click occurs.
Where distributed influence happens before the form
The pre-click surfaces that matter for Tijuana cross-border practices include:
AI answer engines. ChatGPT, Google AI Overviews, Gemini, Perplexity, and Claude. A US patient asking an AI assistant for the best surgeon in Tijuana for a specific procedure receives a generated answer that may or may not mention your practice. That mention or omission is influence happening before any click on your site. Research from Pew and others suggests that AI-generated summaries can reduce outbound clicks while still exposing the patient to the information. The patient still saw the answer. The click never happened.
Patient communities. Reddit threads about gastric sleeve recovery, Facebook groups for Mexico medical tourism, private WhatsApp chains between former patients and their networks. Largely invisible to clinic analytics.
YouTube and video. Surgeon procedure walkthroughs, patient testimonial vlogs, recovery diaries. The patient builds familiarity here long before any direct contact.
Directories and credential databases. Professional license checks, specialty board or council verification, facility accreditation, and regulatory signals.
Reviews. Not just star averages. Specific narratives that match the patient's concern about a specific complication, recovery timeline, or facility detail.
Doctor bios and procedure pages. On your own site, but only if AI systems can extract structured signals from them.
Each surface is a node where the patient is forming an opinion about your practice, your doctors, and your safety. None of them produces a click in your dashboard.
What changes for Tijuana surgeons
Surgeon-led practices have historically asked one question per page: how many leads did this page generate. The question is still useful but no longer sufficient.
The new questions that determine practice growth in 2026:
- Can an AI system find each of your doctors by name?
- Can it connect each doctor to the procedures they actually perform?
- Can it verify credentials, board memberships, and facility certifications?
- Can it find your pricing in the right context, with the right framing?
- Can it cite external sources that support your claims rather than just your own marketing?
- Does the patient arrive at the form already trusting the clinic, or still evaluating it?
Practices that can answer yes to most of these are better positioned to reduce wasted acquisition spend and improve the quality of consultations that reach the team. Practices that cannot may find themselves depending too heavily on paid demand capture to compensate for weak upstream influence. The full breakdown is in our AI Visibility for Tijuana Surgeons primer.
How this connects to Tersefy
Tersefy was built around this reality. The patient journey starts before the website visit and continues before the form. The measurement problem is upstream of analytics.
Tersefy AI works before the form. It addresses the evidence layer: how your practice is represented to AI systems, what they can extract about your doctors and procedures, how external sources align with your claims, whether reviews give specific narratives or generic praise, and whether the patient can verify trust signals across independent surfaces.
The AI Closer System works after the form. Once a patient submits, the bottleneck shifts to response time, qualification, scheduling, and conversion to consultation. Both systems are necessary. They solve different bottlenecks.
You can read the full distinction in Tersefy AI vs AI Closer System, or see how this played out for a multi-surgeon Tijuana clinic in the VIDA case study.
Start with the Scorecard
If you want to know what AI systems can already understand about your practice, start with the Free AI Visibility Scorecard. It will tell you which of your doctors are findable in AI answer engines, which procedures are connected to them, where external sources support your claims, and where the gaps are.
It will not promise that AI will surface your clinic tomorrow. What it tells you is whether the evidence layer your practice depends on is intact or missing.
Start with the Free AI Visibility Scorecard.
Quick answers
What is Zero Click Marketing?
Zero Click Marketing is a strategy and measurement framework for environments where exposure, comprehension, recall, trust, and preference are formed without a click. Clicks remain valid demand-capture signals. They are insufficient as the sole proxy for marketing influence.
Why does Zero Click Marketing matter for medical tourism?
Patient decisions in cross-border medical tourism often form over months, across AI answer engines, reviews, communities, doctor profiles, and credential sources. Much of that influence happens before any form submission, which makes click-only measurement incomplete for this category.
Does this mean clicks no longer matter?
No. Clicks still matter. They capture demand. They do not capture every place where demand is created. The pragmatic move is to triangulate clicks with brand tracking, AI prompt tracking, source analysis, and self-reported attribution at the consultation stage.
How does Zero Click Marketing connect to AI visibility?
AI visibility is one of the largest pre-click surfaces in 2026. If AI answer engines cannot find, extract, or verify information about your doctors and procedures, your practice is invisible during a high-leverage part of the patient decision journey.
Is the SSRN paper peer-reviewed?
No. It is a working paper available on SSRN, not a peer-reviewed journal article. It should be read as an evidence synthesis and conceptual framework, not as a clinical or causal proof.