#1576 2021 · Doximity · professional healthcare networks
Doctors Never Pay; Whoever Wants Doctors Does
the problem
Reaching physicians was expensive and noisy; professional networks charged members and drowned in disengagement.
background
Doximity's S-1 describes the split plainly: membership is free for physicians, while its revenue-generating customers — primarily pharmaceutical manufacturers and healthcare systems — buy commercial access to the professional network.
The result is a network where the scarce side (doctors) pays nothing and never has to be monetized directly, and the paying side (drug marketing, hospital recruiting) buys targeted, verified reach.
what everyone would do
Charge doctors a subscription for premium professional tools.
what they saw
Doctors' attention is worth more to pharma than their money is worth to the network. Free membership keeps the scarce side dense and engaged; that density is what the other side pays dearly to reach.
the move
Make the valuable side permanently free and sell the audience, not the membership: verified physician identities give the network utility that keeps doctors engaged, and that engagement — not their wallets — is the product sold to pharma and recruiters. The free side's trust is protected because the network's revenue never depends on squeezing it.
why it works
Verified identity makes targeting valuable; free membership removes adoption friction in a time-poor profession; and because revenue flows from the buyer side, the network's incentive is member engagement, not member extraction.
the payoff
The professional network for US physicians reached public markets on the members-free model with commercial customers in pharma.
where it breaks
It fails if paid messaging floods the feed and doctors disengage — the audience's trust is the inventory; if physicians' attention migrates elsewhere, the payer side has nothing precise to buy; and conflicts around drug marketing draw scrutiny.
what came after
The cleanest two-sided professional network economics: identity-verified members free forever, buyers of attention pay for precision.
references
- [1]Doximity Form S-1/A (2021, free cash flow exhibit)SEC EDGAR (Doximity Inc.), 2021sec.gov