There’s no honest universal answer to “how long?” because the factors that determine the timeline vary too much.
Market competition is the biggest one. A plastic surgeon in Manhattan is starting from a fundamentally different position than one in a smaller market where fewer practices are actively competing for search visibility. Both can rank well — but the work required, and the time it takes, is not comparable.
Starting point matters nearly as much. A practice with an established site, existing domain authority, and some search presence is closer to the goal than one starting from scratch. The gap isn’t always obvious from the outside, but the SEO work reveals it quickly.
How the site is built affects everything that follows. A site that’s technically sound, structured clearly, and built with authoritative, procedure-specific content gives the SEO work a much stronger foundation. A site that needs structural repairs before any optimisation can begin adds months to the timeline before visible progress is possible.
Consistency is underrated. SEO that starts and stops — because of budget pressure, because of impatience, because results weren’t visible fast enough — produces substantially worse outcomes than sustained work over time. The compounding nature of SEO means that gaps in the work don’t just pause progress. They interrupt it.