Visibility
Patients who need you can't find you.
The practice may be excellent. The problem isn't quality. When someone in your market searches for a urologist, they're not finding this practice. They're choosing someone else.
Growth at this stage depends almost entirely on relationships the founding physician has already built. When those relationships plateau, the practice does too.
More marketing aimed at the same channels doesn't fix a visibility problem. It deepens the dependency on what's already not working.