Andreessen Horowitz December 16, 2025
Most of us think of WhatsApp as a simple messaging app, but in many parts of the world, it also functions as the operating layer of daily life. It’s where families communicate, where businesses run, and increasingly, where healthcare is delivered. In key Latin American countries, it’s estimated that more than 85 percent of physicians rely on WhatsApp to schedule appointments, share results, and manage follow-ups.
But WhatsApp wasn’t built for healthcare. Effective clinical communication requires structured workflows, clear accountability, and reliable tracking of patient needs. Instead, physicians are left navigating dozens of disorganized messaging threads with patients and families, with no visibility into urgency, patient status, and relevant clinical history. The result: hours each day consumed by manual sorting...
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