Not necessarily a fully separate site — a clearly separated section with its own architecture on the same domain is often sufficient, and a fully separate site is usually justified only when the content volume or verification requirement is substantial.
The decision is not about the domain, it is about whether patient and HCP content need genuinely different information architecture, verification, and depth. Where they do, a clearly separated section resolves it without the overhead of a second domain.
A substantial HCP content library, a distinct visual identity for the professional audience, or a technical need to isolate authentication infrastructure are the typical reasons a fully separate site is worth the added maintenance. Otherwise, one domain with a clearly separated, verified section usually serves both audiences better.
Whichever structure you choose, the architecture has to separate patient and HCP content clearly rather than blending them — see HCP portal for how that separation is built regardless of domain structure.
Not decisively — what matters more is correct internal site structure and, if separate domains are used, correct canonical and audience targeting signals between them. Either approach can perform well in search as long as the technical implementation is done correctly and consistently across the whole site architecture.
Yes, that is a common and sensible path — many organisations begin with an HCP section within the main site and separate it into its own site only once content volume or verification complexity grows enough to justify the added infrastructure and ongoing maintenance that a split entails.
Through distinct architecture, navigation, and verification gates rather than a disclaimer banner alone, since a disclaimer does not reliably stop a patient from reaching clinical content. See allergy and immunotherapy for an example of how that separation is handled in a specialty where both audiences overlap closely.
It adds some overhead — separate hosting, security patching, and content updates — but shared infrastructure such as WordPress Multisite can keep that overhead close to running one well-governed site rather than two independent ones. The added verification layer on the HCP side is usually the bigger ongoing cost.
Tell us your content volume and verification needs and we will tell you which structure actually fits.