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Zocdoc runs an online marketplace where patients search for doctors and book appointments, and doctors pay to appear in those search results.
Zocdoc is an online appointment-booking marketplace for healthcare. Patients go to its website or app, type in what kind of doctor they need and their location or insurance plan, and get a list of nearby providers with open slots on their calendars. Then they book an appointment in a few clicks, the same way they might reserve a restaurant table.
The twist is who pays. Patients use Zocdoc for free. The doctors and practices pay Zocdoc to be listed and to have their available appointment times shown to patients searching for care. So Zocdoc is really selling a stream of new patients to medical practices — a marketing and scheduling service dressed up as a consumer app. Doctors accept the cost because filling empty slots in their calendars is valuable, and because Zocdoc's software plugs into their existing scheduling systems so bookings flow in without staff picking up the phone. That setup makes Zocdoc a two-sided business, and two-sided businesses live or die on balance. If too few doctors are listed, patients find nothing useful and leave. If too few patients search, doctors stop paying. Zocdoc has spent years building both sides, and it faces competition from other booking sites and from big consumer platforms that also want to sit between patients and doctors.
Zocdoc is privately held, so its finances aren't public, but the model has proven durable enough to make it one of the best-known names in online healthcare scheduling in the United States. The core promise is simple: less time hunting for a doctor, fewer phone calls, and fuller calendars for the practices that pay to be found.
Saved answer · last researched 15 Nov 2026